Malicious PDF — malware analysis report

Static analysis result for SHA-256 67460eff1515052b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 02:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 632f445e391dab2713bb225074dac5cc SHA-1: bd988dfebbdb4400143b75b84c6c7b9d6ee03397 SHA-256: 67460eff1515052bd7405cdaf42423068a551b26ba519b0dd695e6f67d73c44e
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the URL and a benign-looking PDF title, suggesting a lure. The presence of many external PDF links points towards a link farm or SEO manipulation tactic, potentially to distribute malicious content or phish users.

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=agents+of+socialization+in+sociology+pdf
    • http://files.kathrynjfogleman.com/uploads/1/3/1/8/131856188/laxiwufovob.pdf
    • http://files.mccelpaso.com/uploads/1/3/1/4/131406182/nemadowadiw.pdf
    • http://files.hamiltonsewing.shop/uploads/1/3/1/4/131437363/fugituvolutebu.pdf
    • http://files.realestate-swla.com/uploads/1/3/1/8/131857565/2cfd218.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/antrenmanlarla_matematik_1_soru_zmleri.pdf
    • https://cdn.shopify.com/s/files/1/0435/2825/7685/files/razesuwudilufawo.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/zinosez.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/16907568367.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lawup.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/a_taste_of_romance_full_movie_123movies.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/xupitudewulikiwaluje.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/45418599419.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/overhead_door_legacy_696cd_b.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_off00006685.bin
0a9f9b082482d0cdeb4caff18dcd8adc34a6708bc4b859de5217048e8a9b2549
pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 5368 bytes
font_01_sfnt_off00007901.bin
829016ab07700718178d941e48807e0e76f41fd8078751f240bb26f7ec481de8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7901 10072 bytes