Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ab5d222052921f…

MALICIOUS

PDF

39.6 KB Created: 2020-08-09 22:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1947e927dc05a0d4ace724d49bf9e87c SHA-1: 196490cd1daa1a6e411f00b823438b8066e4e786 SHA-256: 92ab5d222052921fd8e40e4793c20efceab70391dfa69010b0bf1045e3b3d2a6
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains this URL, along with a large number of other URLs hosted on Shopify, suggesting a link farm for SEO poisoning. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document may be intended to trick users into believing they need a password to access content, a common tactic for hiding malicious payloads. The primary malicious IOC is the redirector URL.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=change+pdf+to+word+software+free+download
    • http://files.harwellenterprises.com/uploads/1/3/1/4/131453144/vunamerob-sisudozosare-wukibat-pagimofa.pdf
    • http://files.faithssrd.com/uploads/1/3/1/3/131379553/sudim_roranogumovebal_komijameba.pdf
    • http://files.debstaubdesigns.com/uploads/1/3/2/7/132712206/5059999.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/mabomafep.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/free_printable_multiplication_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/3437/7377/files/new_balance_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/36164885579.pdf
    • https://cdn.shopify.com/s/files/1/0434/9139/3698/files/dezuve.pdf
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/soveludefiru.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/66560530004.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/cricket_rules.pdf
    • https://cdn.shopify.com/s/files/1/0429/2299/9964/files/adrenergic_drugs_medicinal_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/ximelodafawepili.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1272/files/environmental_engineering_science_nazaroff.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/54146850650.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/modele_attestation_de_travail_maroc.pdf
    • https://cdn.shopify.com/s/files/1/0431/0679/5686/files/ielts_reading_passage_practice_with_answers.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_off00005da0.bin
8ebd3d6b61262d2b5b1fe83a51c78825beaed602edb394868727038e9e6a8933
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA0 5300 bytes
font_01_sfnt_off00006fb5.bin
f259d2374631aee88e6bf4945ea8604c821fc7d7d031377fc4857ccd76a4149e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB5 9852 bytes