Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a6b8551e3f161f…

MALICIOUS

PDF

34.5 KB Created: 2020-08-27 19:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c57411a906c5649ce89e8ae52c6670f SHA-1: b7f5a76c56c79799323dfac5fd1069e90bf6fc6e SHA-256: 74a6b8551e3f161f4fc1bf05073047266d257e1ec3a6a5a8353f1fb1ec5e1f01
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector. The presence of a large number of external links, many pointing to Shopify, suggests a link farm or SEO spamming operation, with the primary redirector likely leading to a malicious payload or phishing page. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/pify?keyword=revue+technique+lancia+ypsilon+pdf
    • http://gakezimo.shirtshoponline.com/uploads/1/3/1/8/131871486/rosemixubuwe.pdf
    • http://files.courtneycorcoran.com/uploads/1/3/1/4/131437619/4033597.pdf
    • http://files.eadspainting.com/uploads/1/3/0/7/130740624/7420993.pdf
    • http://files.ameliafrancesfilm.com/uploads/1/3/2/6/132680905/tivitaru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7854/0700/files/caducidad_medicamentos.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/wenedojubeki.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/ccdmd_ponctuation.pdf
    • https://cdn.shopify.com/s/files/1/0435/4218/4095/files/56898001705.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/ignou_sc_st_free_admission_form.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/all_sufficient_god_by_david_g.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/tajevokovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/automatic_capsule_filling_machine.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/zirixokakuvodutitaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5824/9380/files/43092325046.pdf
    • https://cdn.shopify.com/s/files/1/0434/9191/7989/files/wutuzixesidotuxipamokopiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/bivuzewovagazoj.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_off0000494a.bin
7c4cefb3f7f4e3710a7f9049e6d5b4bda071a308a976be101e588a40732bed5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x494A 5440 bytes
font_01_sfnt_off00005bde.bin
c07b05339f3ee910c8ba8f93a15414f14b52e8e7b4a654a3cf36fedb55e6500b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDE 9756 bytes

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