Malicious PDF — malware analysis report

Static analysis result for SHA-256 74eda70f24e94526…

MALICIOUS

PDF

57.6 KB Created: 2020-10-30 09:05:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c6435cf1584ab50f7017a48bf0897da7 SHA-1: 2e5f8add52ade9b8a63425f9ea47df30eb90ec99 SHA-256: 74eda70f24e94526dbbaa2a4155e96422feb0a930ca84ecee4d5c7518a0f5888
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure at `https://gettraff.ru/strik?keyword=dd+form+2977+draw`. The heuristic `SE_CALLBACK_LURE` suggests a phishing or tech-support scam pretext. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/strik?keyword=dd+form+2977+draw In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5f8fe718175db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f8aa8b03575f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393762/normal_5f979e5a6a413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5f96626681a1a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/3277/3543/files/fender_acoustasonic_junior_pr_334_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9412/3720/files/46165489399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d1c1501-da8e-4f98-9ede-9aed75ebe565/tepexusujafofubujixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/2386/8319/files/gameboy_3ds_emulator_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9821/7891/files/family_and_friends.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/wedding_budget_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0510/3550/4805/files/magic_the_gathering_arena_war_of_the_spark_release_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/9975/1071/files/jlg_450aj_manual_service.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/jodo_shinshu_a_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 5300 bytes
SHA-256: b1fa4202218f1ce94e3e5caa65f4afb1b82dad58c395066d4b4c2d804bf4f097
font_01_sfnt_off00009db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB6 11320 bytes
SHA-256: 30d986ffe8d8f5178b8e4d47593fd56e4f7d2b99f08550a9e8e73bfdb1121186
font_02_sfnt_off0000c481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC481 16140 bytes
SHA-256: 2732c78df68b4531e26da51a256f0f9ab881cb8a96d1886ade34872d88eeece3

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