Malicious PDF — malware analysis report

Static analysis result for SHA-256 a23bce61686dde47…

MALICIOUS

PDF

38.9 KB Created: 2020-05-24 22:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be7cd496b059afe2cb1fcef4f22481f8 SHA-1: 80f24ba22892da60ba1bd0114fa7493f3fdcbaf4 SHA-256: a23bce61686dde47fa3c6fa6e07414095b4e1b2088da6693b84db7ec216d37c8
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL points to a page that appears to be a product listing, but the majority of the links lead to other PDF files hosted on various domains. This suggests a link farm or a distribution mechanism for further malicious content. No scripts were extracted, and the document body contained mostly garbled text and URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://2wq.undesirable.us/uploads/1/3/1/6/131606597/131606597.html#panasonic+ergofit+rp+hje120+k
    • http://shapetheagenda.org/uploads/1/3/0/5/130551021/bf59e879f8caa5d.pdf
    • http://ncaafootballdynasty.com/uploads/1/3/0/6/130639364/5ab60fe86231a1.pdf
    • http://katecronin-furman.com/uploads/1/3/1/4/131408666/zegavagazekiku.pdf
    • http://omascoffeeshop.com/uploads/1/3/1/4/131414297/visanajabaseraju.pdf
    • http://corptech.club/uploads/1/3/0/6/130621708/36a5e1.pdf
    • http://misshitch.net/uploads/1/3/2/3/132303374/sifimane-mazexamuzev-feren.pdf
    • http://michelpelletier-author.com/uploads/1/3/0/8/130874298/givotevowuwugi.pdf
    • http://betsyrossproperties.net/uploads/1/3/1/1/131164180/b3d55702f.pdf
    • http://tommigirlsellsjax.com/uploads/1/3/1/4/131408942/ripobo-jogisuzod-tezipizilinefax.pdf
    • http://wintertexanlodging.com/uploads/1/3/0/5/130539255/1346792.pdf
    • http://quasality.com/uploads/1/3/1/4/131453097/2218097.pdf
    • http://mariamesnitsari.com/uploads/1/3/0/7/130738625/cce5a7a.pdf
    • http://thetragedybrothers.com/uploads/1/3/0/5/130539297/1128907.pdf
    • http://stamenandpistil.net/uploads/1/3/0/5/130588749/9948274.pdf
    • http://lecookiette.com/uploads/1/3/0/3/130379696/xopisakerim-sadijiwimi-jurojeliki.pdf
    • http://iglesiapiedrasvivasmn.org/uploads/1/3/1/0/131071037/soxokewakubibevevi.pdf
    • http://apcasphaltpaving.org/uploads/1/3/1/4/131407565/nidazikosij-wefurur.pdf
    • http://fietsencoureur.com/uploads/1/3/0/7/130738528/surelopejit-puwawad-ligojebozuged.pdf
    • http://tml-photography.com/uploads/1/3/0/6/130621819/wajepo.pdf
    • http://fromheretovirginity.com/uploads/1/3/0/2/130291485/80197d.pdf
    • http://quest.hiphop/uploads/1/3/0/4/130478205/8374026.pdf
    • http://solasense.org/uploads/1/3/0/6/130621194/wofonib.pdf
    • http://laurinanorris.com/uploads/1/3/1/8/131856194/121063f6.pdf
    • http://centerspinmarketing.com/uploads/1/3/1/6/131607000/5955373.pdf
    • http://allthingsyogi.org/uploads/1/3/0/9/130969494/wubatu_kajolufek_sukajisibenapu.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b4f.bin
9a8898184765408507fa41438380149a6ec219196c0dd6be26d9ec00edbfee0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4F 10696 bytes