Malicious PDF — malware analysis report

Static analysis result for SHA-256 74c3967567ab45f9…

MALICIOUS

PDF

33.9 KB Created: 2020-05-16 06:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66bcbee540f090393cd0a8df557e1129 SHA-1: b8ad215b4ebae76d78f7980ef09c3bd7137f9e94 SHA-256: 74c3967567ab45f91d20adf8445c054fc231927e16f73b27ef9e8cedc4a90220
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm designed to host malicious content. The document body, though partially corrupted, contains text that implies urgency, further supporting a phishing or scam attempt. The presence of numerous embedded URLs points towards an attempt to redirect the user to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://beaverdamchurchonline.org/uploads/1/3/0/7/130776264/130776264.html#guidelines+for+high+dose+flu+vaccine
    • http://kelseykeltgen.com/uploads/1/3/0/9/130969633/22da057f2ec3e0.pdf
    • http://mattsmentalhealths.com/uploads/1/3/0/7/130739351/tizefexotatosuremu.pdf
    • http://refi-llc.net/uploads/1/3/1/4/131407898/tixak.pdf
    • http://jaymivictor.com/uploads/1/3/0/6/130620677/baxuvexabesawid_wejuxemiwila_pekuw.pdf
    • http://cirugiadrabelgonzalez.com/uploads/1/3/0/2/130270747/ade1ce95a2d4da3.pdf
    • http://terraradarllc.com/uploads/1/3/0/6/130620861/manokowapobir-bapeduwikok-subepo.pdf
    • http://pacificwoodsigns.com/uploads/1/3/0/7/130776015/8702290.pdf
    • http://celinemoorkens.com/uploads/1/3/0/2/130288932/fbe883a.pdf
    • http://printcig.com/uploads/1/3/1/4/131483307/wutiwixis_vanim_vinaxedutuge.pdf
    • http://whenenrouge.com/uploads/1/3/1/1/131163992/muluduvisizave.pdf
    • http://xgens.org/uploads/1/3/1/6/131606692/savaves-kupefikonikazix-xibunisujoduw.pdf
    • http://stevosbbq.com/uploads/1/3/1/1/131164382/dinasolagaxodiputi.pdf
    • http://jadephenixentertainment.com/uploads/1/3/1/0/131070579/zijetani.pdf
    • http://prosperouspooch.com/uploads/1/3/0/9/130969237/sidofobul-doromirabis.pdf
    • http://anuitaalasdair.com/uploads/1/3/1/3/131380476/voxupevobesap-dukiz.pdf
    • http://underleaves.com/uploads/1/3/0/5/130589241/4525761.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba0.bin
d9ebc28da9761c28387d05664ad505d6cfffc697456181287666dacfbfee03ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA0 9512 bytes