Malicious PDF — malware analysis report

Static analysis result for SHA-256 5622770cf660aaca…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 14:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a74389101e14ea97eff57fd6a6105d1 SHA-1: 03530b662d2eb85b3c5371d21a29de157fdde13e SHA-256: 5622770cf660aaca2b7ee8134b156aa8265359f8b658e35fb3652a21d452e32d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.com/pify?keyword=ccvc+words+pdf', indicating the primary lure. The presence of numerous links suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted from this sample.

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.com/pify?keyword=ccvc+words+pdf
    • http://files.katiehornphotography.com.au/uploads/1/3/0/8/130814245/9000118.pdf
    • http://kiguvufe.cocoally.com/uploads/1/3/1/4/131407406/kojidibomapeminurij.pdf
    • http://mawan.valleyhavencamp.com/uploads/1/3/0/8/130873995/nelagexifawoput.pdf
    • http://files.dreamseedfarms.com/uploads/1/3/1/8/131857270/ea3909.pdf
    • http://files.angelbeyond.com/uploads/1/3/0/7/130738889/kafimigemeturop_suzapapeluz.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/1933374063.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/96648404703.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/caterpillar_3406_b.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8986/files/teramogolotoza.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/86648780966.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/77447989523.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9430/files/94935896172.pdf
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/wupaxaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7423/files/building_construction_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0029/9683/files/zirovuzowuzizuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/nuranurud.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/28383977734.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/3780759590.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_off0000647f.bin
7dc568aca884c52614c0ca37d287ad951daf8ddce7b0a94f230d9df24448b7d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647F 4964 bytes
font_01_sfnt_off00007585.bin
b6fdd135a783ef799f784c9c07f058d689900b1df16b60945990790296813176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 9988 bytes

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