Malicious PDF — malware analysis report

Static analysis result for SHA-256 62f782c4d6679db3…

MALICIOUS

PDF

44.3 KB Created: 2020-07-27 02:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d003090f53951f1e9b67596291e49d04 SHA-1: 17a5220ba82bd8ae030f11f6060ef8ed6d0e481f SHA-256: 62f782c4d6679db351d35af8d11621c108cde94790781d7edf3a869dcea7b5ae
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, with one pointing to a known malicious redirector (ttraff.com). The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to distribute malicious content. The ML classifier strongly flagged this PDF as malicious, and the 'SE_URGENCY_LURE' heuristic suggests a social engineering tactic to prompt immediate user interaction with the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=nice+clinical+guidelines+delirium
    • http://files.rollthai.com/uploads/1/3/0/7/130740221/gizeg_fedibig_vefixi.pdf
    • http://files.alaskadalmatians.net/uploads/1/3/1/8/131857655/929fe9151128605.pdf
    • http://files.thepureprescription.com/uploads/1/3/1/8/131857465/6591216.pdf
    • http://files.westcapitalrealty.com/uploads/1/3/1/3/131379743/kuwileritonigo_bexuniforul.pdf
    • http://files.livingwatersmidwifery.com/uploads/1/3/2/6/132681749/7289893.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/valakinepafuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8098/2436/files/feregopiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/kimonujenagelas.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/luxin.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/rexejofamejakawizale.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/12262881018.pdf
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/5518821935.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/xunafajozefitubuwojagileb.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lorirazapevimixawas.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/57018774709.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007132.bin
3a2e0b75e1948db0e2f5837cdad01566b9d26a12c23fdfac4da6183e5d5008fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7132 4920 bytes
font_01_sfnt_off000081ba.bin
cacf05d56bb07d88ebf4b288660a3cea2c4ec03c2c4fae7c743c182bc3e5b388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.