Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2da65efda880ad…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 21:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60fcec43d638b28b6286bbd0d739a994 SHA-1: f16ba3d55e138ce0df6c9179cabd6fdaae9eaf52 SHA-256: 2e2da65efda880ad480ea31b14bc6497e7a4c8199ebc2a03b590d6ad0391f65e
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.ru. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'Appsc panchayat secretary previous papers pdf' and a URL that matches the redirector, suggesting a lure to a malicious site disguised as a document. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=appsc+panchayat+secretary+previous+papers+pdf
    • http://files.spinecarechiropractic.net/uploads/1/3/1/3/131384018/30437.pdf
    • http://files.kmgsgolf.com/uploads/1/3/0/7/130740625/xemiw-tiwure-sifiv.pdf
    • http://zuwerox.ironsharpeningoursisters.com/uploads/1/3/1/3/131380429/luduvitof.pdf
    • http://files.thathippiephotography.com/uploads/1/3/1/6/131606652/7182883.pdf
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/absolute_power_novel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7693/4042/files/jivarobeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/bacillus_anthracis_microbiologia.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/pokizemiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/re_awaken_the_giant_within.pdf
    • https://cdn.shopify.com/s/files/1/0430/6776/8981/files/39065311820.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/7961201233.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6217/files/dosimepove.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/turob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/32461789197.pdf
    • https://cdn.shopify.com/s/files/1/0429/8529/1937/files/buku_andrea_hirata.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_off0000644c.bin
e17e66fae3c67f41b1b9fad27c3e4a975289927f88bb66e745441a3acdccd99c
pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 5364 bytes
font_01_sfnt_off00007685.bin
52268b6b5fcb8da849f2130b8f4a6d24b61768ff05a07bfcfcab0de79bf50055
pdf-font-stream PDF embedded font (sfnt) at offset 0x7685 9964 bytes