Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5fc30d6c6060e88…

MALICIOUS

PDF

79.4 KB Created: 2020-08-22 01:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 016cedeb19507a78d8c9ef1940186791 SHA-1: 5674e017988da432d1b3eaa937ca274461fdc9c5 SHA-256: e5fc30d6c6060e88149a1b1af132fe935599612c576c1f17c46f33d23f1b585e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, with one specific URL pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be the malicious redirection via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=pueblos+indigenas+de+mexico+pdf
    • http://gevaxik.italianstylerecipes.com/uploads/1/3/1/8/131856772/4b063.pdf
    • http://files.familylawyerminnesota.com/uploads/1/3/1/6/131607712/jubigi_vomikewupinoz.pdf
    • http://wovoru.handpressoth.com/uploads/1/3/1/4/131406799/gidigurasopagi_nalibosuzil.pdf
    • http://gemigil.bigtrecreation.com/uploads/1/3/1/4/131406535/napuxe.pdf
    • http://files.ryanshowland.com/uploads/1/3/2/7/132740978/7f7245a6b279f9a.pdf
    • https://cdn.shopify.com/s/files/1/0461/6500/0344/files/monthly_infant_lesson_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/besetopodazerijoma.pdf
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/89914596565.pdf
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/33374368988.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0969/files/70109228685.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/60831910841.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/gubodupugugezuzori.pdf
    • https://cdn.shopify.com/s/files/1/0437/7270/6977/files/fasufufufikuginulupomi.pdf
    • https://cdn.shopify.com/s/files/1/0462/7093/9293/files/715838505.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/academic_word_list_for_toefl_ibt.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/vigidorurelemi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/92302148439.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/twin_extra_long_flannel_fitted_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/what_s_the_new_cpr_guidelines.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8aa.bin
32d8b0e22706277d73364c15575a8339c3aaee58465ec05b5f0a53b3b7dad479
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8AA 5388 bytes
font_01_sfnt_off0000fadd.bin
d20d7a36c80378a53850a582725c8ba0ed4afb4dbc8166371383d1ed0cd87d58
pdf-font-stream PDF embedded font (sfnt) at offset 0xFADD 11576 bytes
font_02_sfnt_off0001209c.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x1209C 4324 bytes