Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aafbc74febe7b82…

MALICIOUS

PDF

73.3 KB Created: 2020-08-01 20:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b3f20c1d1a49ad583b04a9455f160bd SHA-1: 00828b6b79cb65bb87cf7171743782480958980a SHA-256: 0aafbc74febe7b82b535d868fe4ff1830107261d135de977d98c5434f6a303de
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One prominent link, 'https://ttraff.ru/pify?keyword=draconic+bloodline+sorcerer', is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and the presence of malicious links indicate an attempt to redirect the user to harmful content, likely for phishing or malware distribution.

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=draconic+bloodline+sorcerer
    • http://files.damcross.com/uploads/1/3/1/4/131436981/6582799.pdf
    • http://files.truthinaspectastrology.com/uploads/1/3/1/1/131163669/rosufuwe.pdf
    • http://files.beltonrvpark.com/uploads/1/3/1/0/131069978/muvek_lakefajega.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/legewiwalepu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jujirufevob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexikebesadunav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/basumisafujuman.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/nabaveteletalabidetadugud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/24640205906.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/suvukupisawanuvaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4276/7001/files/30467994966.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/9196786901.pdf
    • https://cdn.shopify.com/s/files/1/0435/3271/4139/files/mufuwoxavonupejamif.pdf
    • https://cdn.shopify.com/s/files/1/0438/0930/8829/files/neremifudopezemavuvi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/79769851235.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/gusajadomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/ludaxipuzoresurozodulef.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/94863065836.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_off0000e3af.bin
18abac4bcbc1d8c0f7bafca5dbcfe4da0e2ca51e22689f5b407560223e435f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AF 5072 bytes
font_01_sfnt_off0000f4f5.bin
cbbc27fcce8f84057d13fe1ddbefbdecef65cf3bb5bab80e5243f5d6718bc2d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F5 10316 bytes

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