Malicious PDF — malware analysis report

Static analysis result for SHA-256 5835eb17ab610208…

MALICIOUS

PDF

36.5 KB Created: 2020-08-10 21:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 693542495c23965d93a0d2d6fe6b924e SHA-1: 912bd3884755b3659d49932b22f3febcd49940fe SHA-256: 5835eb17ab610208856c2621a1460ea7c946058d7d96b2ef86e45f6d64c42c34
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 of which point to a link farm designed to host further malicious content. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. 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.ru/pify?keyword=billy+graham+books+on+prayer+pdf
    • http://files.cherylmccormackdancers.com/uploads/1/3/0/7/130776016/fuzevep.pdf
    • http://files.simonecasey.com/uploads/1/3/0/7/130740173/mojimurevote-sepebe-nogoro-gukurem.pdf
    • http://files.meistermagic.com/uploads/1/3/0/7/130776498/5f94942241c.pdf
    • http://nubonubi.plate-deals.com/uploads/1/3/2/6/132680813/gokuvelojuralob-zujuwudot-xasogebavule-xumawunofeziz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/mavuli.pdf
    • https://cdn.shopify.com/s/files/1/0443/1475/5228/files/agorafobia_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/tulivofosepewuwokojemoza.pdf
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/51961314136.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/hydraulic_actuators.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/susadivubijovezupa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/fefijarotulilidux.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/gebinoxawej.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1014/files/xegifexozusavi.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_off0000502e.bin
03b48ae172be524ea7595c33cd93e9777e15fc6e7b075aad8755c0beaeb942ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x502E 5808 bytes
font_01_sfnt_off000063c5.bin
9f92945e29e13c9c475c8121f6072c4cc677aa4df8463aabceaf25d1f40df247		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C5 9912 bytes

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