Malicious PDF — malware analysis report

Static analysis result for SHA-256 61901fa3374f91db…

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 04:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfae5a0a401b4a9570cc2a478c7d998c SHA-1: 8ddcfd836f4c6d1dc3f6f9b65c4459b93de13d48 SHA-256: 61901fa3374f91dbecbdec0453699f4601facb3ecda35ba948cf71a80b015bba
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a worksheet, which is a common lure. The presence of many external PDF links indicates a link farm, likely for SEO poisoning or to distribute malicious content.

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=atomic+mass+and+atomic+number+worksheet+pdf+answers
    • http://depavom.stitchconnect.co/uploads/1/3/1/3/131398560/tixalimoliwa_rojik_tamix.pdf
    • http://zurenijag.npnphotography.com/uploads/1/3/1/4/131407406/bazodesot_nevifagotifoz.pdf
    • http://files.misshavishamscuriosities.com/uploads/1/3/1/4/131453018/6f301fafb1a17.pdf
    • http://files.joshuajfreeman.com/uploads/1/3/1/4/131438121/5340472.pdf
    • http://files.shannondrhodes.com/uploads/1/3/0/8/130873907/1944747.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7612/4821/files/81093640550.pdf
    • https://cdn.shopify.com/s/files/1/0428/6660/6247/files/mivipagizeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/metabolic_disorders_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/30981260615.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/32960346133.pdf
    • https://cdn.shopify.com/s/files/1/0439/4024/9755/files/livre_gratuit_pour_apprendre_l_espagnol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/temufaxilagig.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/jojidoxixulujetil.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/pifagedefizunipaberomepen.pdf
    • https://cdn.shopify.com/s/files/1/0444/5110/2887/files/sentence_according_to_structure.pdf
    • https://cdn.shopify.com/s/files/1/0429/1792/0934/files/bupeb.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_off00006b01.bin
c075b368739ee8f1d54f4fa5260ee4205aa51bbdd89100afd8787082cef93ed3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 5648 bytes
font_01_sfnt_off00007e1a.bin
9ac8a71b83dc9f12e6c85922f51e352541de2f9958c8f16f10d97496499340f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 10344 bytes

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