Malicious PDF — malware analysis report

Static analysis result for SHA-256 5733abdea360a767…

MALICIOUS

PDF

41.1 KB Created: 2020-08-06 08:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 905a5aeb5aa495e703d7523b25528cbd SHA-1: ef8c0f6ba42a195d6668f490b05aa86bfd7ed4d7 SHA-256: 5733abdea360a7679b780cda929e5f0e7453b0f535050baad17d5edce4fe7d0f
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.ru/wb?keyword=pop%20up%20camper%20manual%20lift`. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on various domains, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. 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/wb?keyword=pop%20up%20camper%20manual%20lift
    • http://files.accruemineralsinc.com/uploads/1/3/2/8/132814168/wamukegam-desaruzu.pdf
    • http://files.shardenfreude.com/uploads/1/3/1/3/131383493/xajiw_vogubukixug_riwojekezigek.pdf
    • http://files.ongoldenpondguesthouse.com/uploads/1/3/1/4/131407284/2290759.pdf
    • http://xofuf.valnettoyage-sarl.ch/uploads/1/3/0/9/130969332/3d2401.pdf
    • http://najin.rachelhjohnston.com/uploads/1/3/1/0/131071164/marufupadizekew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekutaxawiwasutoxojopelor.pdf
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/kifefuxoxagavoluxubumaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32852202686.pdf
    • https://cdn.shopify.com/s/files/1/0430/3205/1873/files/93593258172.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/koponog.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4304/files/campagnolo_khamsin_asymmetric.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/nofaxudeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/varabiwetuliravidagami.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/8035768857.pdf
    • https://cdn.shopify.com/s/files/1/0435/9415/4146/files/35377639153.pdf
    • https://cdn.shopify.com/s/files/1/0439/7400/0798/files/76741757699.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/xexumixol.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_off00006499.bin
55470b6fb45c2814477dc52349ef23a4abde07e115b54b1bb7b77252df2cc9c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 4984 bytes
font_01_sfnt_off00007579.bin
cd4231b80904409606757917fdd738ebe1aa9f56cd9baa9f7d5891ddf8e61946
pdf-font-stream PDF embedded font (sfnt) at offset 0x7579 9976 bytes