Malicious PDF — malware analysis report

Static analysis result for SHA-256 8867def571619a1f…

MALICIOUS

PDF

47.7 KB Created: 2020-08-25 22:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16a967febe3d53826536b880dbd6d04b SHA-1: 6cc43d3249f3faca84dc3b1eecb40f053bc665be SHA-256: 8867def571619a1f1d0b12cdb370d8d49e102442419ef1f66e515211935ce69f
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, likely as part of a phishing or scam campaign. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the embedded URL points to a redirector service. The document body, though heavily obfuscated, contains the target URL and keywords suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.cc/pify?keyword=2003+ford+f150+service+manual
    • http://maberofoj.mappingdisgust.com/uploads/1/3/0/8/130874284/1061168.pdf
    • http://files.jamminforjaclyn.org/uploads/1/3/0/7/130774999/zerupiliduvijafop.pdf
    • http://files.shbshowpigs.com/uploads/1/3/0/8/130874332/mefapumes.pdf
    • http://topoxew.theartistinyourshoes.com/uploads/1/3/1/4/131453045/pijujoluxizimudaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/coeliac_disease_review_articles.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/zuketipapuz.pdf
    • https://cdn.shopify.com/s/files/1/0466/5321/0789/files/badshah_movie_hd_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/pancreatic_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/medical_journal_abbreviations_list.pdf
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/answers_to_nyt_crossword_puzzle_0112.pdf
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/aua_guidelines_renal_mass_active_surveillance.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/catia_v6_full_crack_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0433/8378/3575/files/17721293628.pdf
    • https://cdn.shopify.com/s/files/1/0449/7866/7688/files/makita_3612_router_edge_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d8e.bin
8d16eea613159d112d659eb8db4b41f041e37d00a5213646688a0c58b6b41dbc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8E 5744 bytes
font_01_sfnt_off00008105.bin
2547b5f693dac8b4648bd9f394ad83c51c3293407f6dbf57cb25b493a4d318b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 15100 bytes