Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ceadaa034fcda76…

MALICIOUS

PDF

37.3 KB Created: 2020-08-11 21:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06fe72e9d96aa0f70e1aaa4afdfec5b6 SHA-1: 0078a4c35aa762bd5733e90baa3a83581109366c SHA-256: 2ceadaa034fcda762654e4e239b4d1086b886841e4679f1078d7c0707083320c
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised as a manual for an 'Altivar 31 inverter'. This indicates a social engineering attempt to trick users into visiting a malicious site.

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=altivar+31+inverter+manual+pdf
    • http://files.alabamamobilehomebrokers.com/uploads/1/3/0/7/130776358/61dd6387849cc.pdf
    • http://xosoji.wordfoodmusic.com/uploads/1/3/0/7/130739678/wuxidagudug.pdf
    • http://pemafe.oldpueblosoapery.com/uploads/1/3/1/1/131164250/gabunevapizaxal-bofofuzadibojum-xarufuguxorufa.pdf
    • http://files.benbibleinsta.com/uploads/1/3/0/8/130813095/sozanovulunamusol.pdf
    • http://xelodaso.missniquecshoetique.com/uploads/1/3/1/3/131383297/cf45289a21.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/mupanogazarexelikupejo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2074/6906/files/82760369846.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/84240254289.pdf
    • https://cdn.shopify.com/s/files/1/0441/2735/5032/files/descriptive_essay_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/memofus.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/fudetulejetuvupifajuginu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/creo_parametric_2._0_for_designers.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/xurik.pdf
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/93289936053.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/80208656830.pdf
    • https://cdn.shopify.com/s/files/1/0437/2925/6613/files/85578257709.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/99563605218.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_off00004a0c.bin
9c8f753be88fbf7ba74db557a8c5027998d31581ab19d671f76b9896d74007ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A0C 5276 bytes
font_01_sfnt_off00005bf0.bin
864866757b6deb8c5244c46bf7092af0970b2112630fef109447150e2ee3240b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF0 13548 bytes