Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e98dd3781f15b57…

MALICIOUS

PDF

53.3 KB Created: 2020-08-08 21:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a19d4beef168534306927f14880a4a82 SHA-1: a0ec32c141242ac8a07e82d1e7c64d058aee536c SHA-256: 1e98dd3781f15b57a47c8bbaf391a98ff49e9e4b6a7a9f3ecb4c44b95d8b0b9c
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a lure related to biblical sermon outlines. The PDF also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.

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.com/pify?keyword=bosquejos+biblicos+para+predicar+y+ense%25C3%25B1ar+pdf
    • http://files.doneitnow.com/uploads/1/3/2/6/132681767/womofidusumeb.pdf
    • http://fugegemuv.nieuwswet-newslaw.org/uploads/1/3/0/8/130874359/4981976.pdf
    • http://files.hopeforpuertorico.com/uploads/1/3/1/6/131636972/84693f9b3669603.pdf
    • http://files.michaeljamesvocals.com/uploads/1/3/1/3/131383657/9336964.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/zogex.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/11926119598.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/1977927567.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7732/files/fofazuzinerunarodima.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4587/files/puzejoxuromogilim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87913440599.pdf
    • https://cdn.shopify.com/s/files/1/0430/4050/6009/files/kasemikedoni.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/kofefimimafetukipoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9826/0124/files/69225769754.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/27072640358.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/devisudipobano.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/english_grammar_book_for_class_4_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8106/2805/files/45641169068.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_off0000817c.bin
a37cdb97c9f27de2a82ae807509ea2d8aab2438b8d6d3f5889d1aaac58700c40
pdf-font-stream PDF embedded font (sfnt) at offset 0x817C 5656 bytes
font_01_sfnt_off0000947e.bin
ec5da3bae6f2cd123d5f4bd8ea084186c0d0a1205bc1fe059e26f0dcefa4edae
pdf-font-stream PDF embedded font (sfnt) at offset 0x947E 10928 bytes
font_02_sfnt_off0000b7ae.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB7AE 4324 bytes