Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9e930a33591ae2…

MALICIOUS

PDF

51.4 KB Created: 2020-08-08 11:31:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 149fc44a256869c08b31ae9bb0b30ae2 SHA-1: 0177d04d7506c0e667c0d62c2170c48401838e75 SHA-256: ed9e930a33591ae256d49b99cba7e252fe1190bebda9b68c384ddeb43439d90f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=carte+ter+auvergne+rhone+alpes+pdf. The document also features a link farm pointing to numerous other PDF files hosted on Shopify, likely as part of an SEO poisoning or link-building scheme to distribute malicious content. No scripts were extracted, but the extensive link farm and the identified malicious redirector strongly suggest a phishing or malware distribution attempt.

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.com/pify?keyword=carte+ter+auvergne+rhone+alpes+pdf
    • http://files.itinerantliteratebooks.com/uploads/1/3/1/8/131856188/0dd02b87.pdf
    • http://files.goodgovernancephilippines.org/uploads/1/3/1/1/131164236/ae4dda1d.pdf
    • http://files.rogueconditioning.com/uploads/1/3/1/3/131382808/wojavegevidiku_tuzef_sukof_nodogojodi.pdf
    • http://vegenog.westtechmobile.ca/uploads/1/3/2/3/132303338/8525975.pdf
    • http://files.aqua-ohm.com/uploads/1/3/1/4/131406592/nekegurupapev.pdf
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/sazotozazosanipajamuz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/wopebamose.pdf
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/39869311542.pdf
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/fugulurenofibobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/imdb_the_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3420/files/ledupebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/wekovunokabaveli.pdf
    • https://cdn.shopify.com/s/files/1/0431/2704/6301/files/21444785706.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2099/files/jevumexo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/fetal_development_chart_month_by_month.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0067/files/lodomil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/bopawofitidofosexizuli.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/balijike.pdf
    • https://cdn.shopify.com/s/files/1/0432/0739/3435/files/36069390887.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007933.bin
d590f00c432fbe61ba4618cf67f3e3867de6f3c828e662ef95722fe910c1e099		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7933 5268 bytes
font_01_sfnt_off00008b20.bin
8a6c20ac55c001e8b266b96c44c6216e7e10bbbba79880e0372eeb3ca6537979		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B20 17692 bytes

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