Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8096742d97d4c20…

MALICIOUS

PDF

49.5 KB Created: 2020-08-10 17:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c24f79965926ca4caa225422bffbb0b SHA-1: 392ee8ae8e9633881db7ad32d9b11cb869a68b2f SHA-256: a8096742d97d4c20c7bf6e13fc7514d7af9278b94f4b5a2f73ec6feac239bcd1
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=biosynthesis+of+vinca+alkaloids+pdf', suggesting a lure to a malicious site. The presence of numerous Shopify URLs, while mostly benign, indicates a link farm strategy. No scripts were extracted, and the family is undetermined.

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=biosynthesis+of+vinca+alkaloids+pdf
    • http://pepom.singletree-emporium.com/uploads/1/3/0/7/130739561/932bf319.pdf
    • http://files.horseplayandharmony.com/uploads/1/3/0/9/130969935/5ae28c8d68bd.pdf
    • http://files.alexsarrigeorgiou.com/uploads/1/3/1/4/131411199/9036105.pdf
    • http://files.orderdipped.com/uploads/1/3/1/0/131070394/a8fcc33b5.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/gajij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8602/7677/files/25850716638.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/55259631070.pdf
    • https://cdn.shopify.com/s/files/1/0432/3439/4276/files/ranofuvofuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1789/5070/files/nanirofubuwusumukagasug.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1196/files/vasogozuba.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/soloxugije.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/xerusojujilojutozufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6675/files/21790589031.pdf
    • https://cdn.shopify.com/s/files/1/0447/7586/6519/files/gegesesumexijajenim.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/46666364068.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/zombie_minecraft_skin.pdf
    • https://cdn.shopify.com/s/files/1/0431/8075/3058/files/narovotewobojuxemoke.pdf
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/81499812485.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000765c.bin
9b4ed2d006dcdb25c4706a6e625c2db6be39f419debc04d745fadb6cb4945856
pdf-font-stream PDF embedded font (sfnt) at offset 0x765C 5208 bytes
font_01_sfnt_off0000881b.bin
6ce08cefb47f461aa5c0c1d6461af312e7edefbc823a21e66f5e230803116031
pdf-font-stream PDF embedded font (sfnt) at offset 0x881B 9992 bytes
font_02_sfnt_off0000aa4c.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA4C 4324 bytes