Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17ea4e9603df406…

MALICIOUS

PDF

71.3 KB Created: 2021-03-25 02:39:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1eaf5797650036e0849a92ab4e97259a SHA-1: dcd26e5a41c2d977a5f8874f7a4c1c0094b06530 SHA-256: f17ea4e9603df406273e1afcdee4c7c55b8d42589631f50135412e544f3494e5
254 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URLs point to known malicious infrastructure and SEO redirectors designed to lead users to further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://crophysi.ru/wix?keyword=dr+mansour+rostami In PDF document text
    • http://site-shop.xyz/beach_wallpaper_freet19ft.pdfIn PDF document text
    • http://retapadu.medianewsonline.com/40502071085.pdfIn PDF document text
    • http://zapitexidij.mypressonline.com/what_is_the_difference_between_milwaukee_m12_batteries.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/TiehjeG/rugajaxitavuxiveto.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/wXYjfi3/stellar_wanderer_best_ship.pdfIn PDF document text
    • https://cdn.sqhk.co/jagajara/1rjeYgg/table_format_email_template.pdfIn PDF document text
    • http://pidusejop.medianewsonline.com/algebraic_equations_grade_8.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/control_system_engineering_book_download.pdfIn PDF document text
    • http://fejavodexata.getenjoyment.net/does_the_vampire_diaries_have_a_book_series.pdfIn PDF document text
    • http://prolac.ru/pafinigimwiqrs.pdfIn PDF document text
    • https://cdn.sqhk.co/vopufepivipe/jejfggM/rizikavemeni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dusined/airpods_similar_android.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/maytag_neptune_tl_washer_manual.pdfIn PDF document text
    • http://zaxuzut.atwebpages.com/99246288595.pdfIn PDF document text
    • https://952d9f4b-853a-4e85-af28-23c4d489d487.filesusr.com/ugd/8db125_194768cb37e641d7891392551d201155.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovezux/20586396995.pdfIn PDF document text
    • http://zagofij.onlinewebshop.net/dipigojilebipi.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/46305149879.pdfIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_50ef3ae867e64239ae0f56f6c37fbc7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/evenflo_car_seat_belt_replacement.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA73 4800 bytes
SHA-256: ceccd8ab85ddadf0bcf8d775916049c72aee7cfa5ebd1f144369555ee81146ef
font_01_sfnt_off0000eaa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA8 10984 bytes
SHA-256: 057272df98727b2b148a7618d0a38d1fb124f0f78e968f3b72707d0454236a94

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