Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d983d064d8975f5…

MALICIOUS

PDF

96.8 KB Created: 2021-05-22 06:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2653c60248801e4fcfd955ef12437640 SHA-1: 459f1e1d3c735b6892872f4b1609acbffded1817 SHA-256: 7d983d064d8975f5000c5947944ce18c4b75d1c5fe815415fa8561eb551c4183
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is https://dafemum.ru/strik?utm_term=printable+origami+fortune+teller+template. The file also exhibits characteristics of an SEO link farm, attempting to leverage numerous PDF links for potentially malicious purposes. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dafemum.ru/strik?utm_term=printable+origami+fortune+teller+template In PDF document text
    • https://s3.amazonaws.com/mipizaju/informatica_cloud_tutorial_point.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/97485747979.pdfIn PDF document text
    • https://suligabewe.weebly.com/uploads/1/3/4/0/134040343/852b903b5e633.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/esc_dyslipidemia_guidelines_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/accounting_terms_crossword_puzzle_answers_aicpa.pdfIn PDF document text
    • https://tuxutumixebapi.weebly.com/uploads/1/3/1/4/131438514/0a8b5f21e.pdfIn PDF document text
    • https://xefosujusiro.weebly.com/uploads/1/3/4/0/134042031/mepejudefogazemule.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/equivalent_fractions_worksheets_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/macbeth_act_4_scene_3_modern_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/gone_with_the_wind_sequel_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/appearance_and_personality_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/sabopebipob.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/waxaxegowutajuguvosev.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/money_laundering_sentencing_guidelines_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/line_6_floor_pod_multi_effect_processor.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/game_bakugan_battle_brawlers_pcsx2.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/puwekijibirutenejaxar.pdfIn PDF document text
    • https://zakoponuzu.weebly.com/uploads/1/3/5/9/135992890/6afa29d94.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/sasajixazo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/expanding_difference_of_two_squares_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d564125-23f0-42af-93fd-d74d22ca70d3/python_best_book_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f87aef2-3988-4cef-9b64-41c59962e2ad/la_la_land_cast_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b91cfb3-f228-4ac5-ba19-0a1fc2610f6e/vans_old_skool_black_and_white_womens_size_7.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F66 5184 bytes
SHA-256: 0066903b2326e9a0f03c8e50efc27c764fd9d40b5bce69c6609f9e3ebc4c88ae
font_01_sfnt_off000130f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130F0 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0001397e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1397E 10964 bytes
SHA-256: 9c32ffaf227b05c1a83716ff37e3a7d10580dc734d5c36d261ef24ae1e76ccf5
font_03_sfnt_off00015f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F09 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939