Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c058371a2fc4a1…

MALICIOUS

PDF

44.2 KB Created: 2020-07-31 20:26:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4a7f8e2b73b2da7280d8fd1c523a17b SHA-1: 813e7370995daae6b0cfe322ad5f46b11d4d9e97 SHA-256: f0c058371a2fc4a1eed079a4aca960fd429e166517974a2a821b7501fea757c8
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body contains obfuscated text and the primary malicious URL, suggesting a lure for users to click through to potentially harmful content.

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.cc/pify?keyword=google+pony+express+games
    • http://files.joshuajfreeman.com/uploads/1/3/1/4/131438121/5340472.pdf
    • http://files.dnrcustoms.com/uploads/1/3/1/3/131379894/rutus.pdf
    • http://files.thebutterflyhaus.com/uploads/1/3/0/7/130738814/zuxinamejojeveweta.pdf
    • http://files.methodtomymadridness.com/uploads/1/3/1/3/131383586/3433227.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/zoligin.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5713/files/37730887812.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/zibolaliligowumobere.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/2147148093.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/xagisidemuwiwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1327/5811/files/96730034575.pdf
    • https://cdn.shopify.com/s/files/1/0432/6300/0736/files/zaketukagaverubikofisu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/tagimukotim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/fodadigajurojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/41015942416.pdf
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/demadokogupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/34656306269.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_off00006d14.bin
ff3bcf7dbde6ab3cb6233ce300f28f71fee34412e69423968174393d4f6a2d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D14 5340 bytes
font_01_sfnt_off00007f3d.bin
3b3a723cb060721ea2d27f219c0cdbaaa5e6c081b35ee1756b88f23789dac2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3D 10584 bytes

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