Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c60edb2d85c5f82…

MALICIOUS

PDF

83.2 KB Created: 2021-03-03 13:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1b595324f004f6dd8d0e9f0731d700fd SHA-1: 47fa8306ccba7028465fb88e2a7685ebc5d2ba73 SHA-256: 4c60edb2d85c5f8295a4d46f63509b8e0ea0db83308db731786fadb8f3742781
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to 'yafferge.ru', which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://yafferge.ru/strik?utm_term=presentation+zen+design+garr+reynolds In PDF document text
    • https://static.s123-cdn-static.com/uploads/4466135/normal_5fc79cca28919.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/where_can_i_donate_clothes_for_cash.pdfIn PDF document text
    • http://giwitap.getenjoyment.net/75916317401.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5fe23ddc3f701.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/south_indian_wedding_vegetarian_food_menu_list.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/how_to_reset_my_printer_settings.pdfIn PDF document text
    • http://devlp.design/incident_report_sample_letter_philippineshvmou.pdfIn PDF document text
    • http://gladkoe-telo.xyz/bodmas_examplese6kzl.pdfIn PDF document text
    • http://twenty-promo2020.ru/sugenazukawizoxogald8pg.pdfIn PDF document text
    • http://center-san.ru/61975886980es3i5.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/jGXiggd/94569874156.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/anukokunda_oka_roju_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/black_panther_animal_hd_wallpaper_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/hack_money_game_android_no_root.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/algebra_2_for_dummies_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/third_eye_meditation_music_free.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA1 4936 bytes
SHA-256: 935784e34299529acc33cae1415586305ed9ea5291f058add72baa7a5f178dd8
font_01_sfnt_off00010e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E75 10224 bytes
SHA-256: d274f6998114790371d09639f78e1f07a8102f6026de90902afc4b1e769f6a5a
font_02_sfnt_off0001317c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1317C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.