Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96250c030cc02e6…

MALICIOUS

PDF

42.9 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: cbfc18e9ac057d08dd5b8fb41bd7fda1 SHA-1: 78552753bdec94f1bdf8b7cb46a340a4f2f43ce2 SHA-256: d96250c030cc02e674ce7e2d1f8672e684a06eaa82a7dd21683a7fd698ba2020
192 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This technique, identified by the PDF_SEO_LINK_FARM heuristic, is often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body contained mostly garbled text, making it difficult to ascertain a specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://talknique.com/uploads/1/3/0/2/130291030/3788538.pdf In PDF document text
    • http://jimarcher.com/uploads/1/3/0/6/130621052/gujosanexij.pdfIn PDF document text
    • http://migeorgeson.com/uploads/1/3/0/4/130476943/c10d2e316.pdfIn PDF document text
    • http://mimiwong.net/uploads/1/3/0/6/130620606/2406110.pdfIn PDF document text
    • http://icedome4on4.com/uploads/1/3/0/6/130640095/2054323.pdfIn PDF document text
    • http://merrymanchiropractic.com/uploads/1/3/0/7/130740490/pokuj.pdfIn PDF document text
    • http://bjjfoku.com/uploads/1/3/0/7/130775911/pezigik_sudirupule_duvufuzimitulen_jamev.pdfIn PDF document text
    • http://bygraceweobey.com/uploads/1/3/0/5/130588426/tisetazaniw.pdfIn PDF document text
    • http://hostmaster.fairlightfolk.com/uploads/1/3/0/6/130620520/b0f011e914d54.pdfIn PDF document text
    • http://phdentists.com/uploads/1/3/0/4/130488470/5fb8c.pdfIn PDF document text
    • http://netmabrle.net/uploads/1/3/0/7/130740196/f9bc2b.pdfIn PDF document text
    • http://babyak.net/uploads/1/3/0/7/130739593/76715480c16e.pdfIn PDF document text
    • http://bjenyes.com/uploads/1/3/0/9/130969254/derimowaz-dinani-gitujig-kumebisa.pdfIn PDF document text
    • http://motomomfuel.com/uploads/1/3/0/7/130775710/1306948.pdfIn PDF document text
    • http://masterpeacepress.com/uploads/1/3/0/8/130814246/lumulonipilidefome.pdfIn PDF document text
    • http://msmale.com/uploads/1/3/0/7/130775109/3230633.pdfIn PDF document text
    • http://oahuanna.com/uploads/1/3/0/7/130740480/266d908db94ca.pdfIn PDF document text
    • http://portugalatlanticosul.org/uploads/1/3/0/7/130776641/b1b6fc8a57f1e.pdfIn PDF document text
    • http://crowhillindustries.com/uploads/1/3/0/6/130603905/tojagadawixoluf.pdfIn PDF document text
    • http://aerosportoutfitter.com/uploads/1/3/0/4/130476395/gibajuzupijux_wuzisetedevut_lamuna.pdfIn PDF document text
    • http://fkox.com/uploads/1/3/0/7/130738984/af28a.pdfIn PDF document text
    • http://mndball.com/uploads/1/3/0/6/130620370/64e277f3a.pdfIn PDF document text
    • http://hongliguojiyulechengyouhuitiaojian.f18.ebkf.org/uploads/1/3/0/6/130620478/4450374.pdfIn PDF document text
    • http://t84.dk/uploads/1/3/0/4/130483110/wogojixaman.pdfIn PDF document text
    • http://encore00028.voyagerwebsites.com/uploads/1/3/0/2/130270904/130270904.html#mapa+mudo+asia+politicaIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEF 4516 bytes
SHA-256: 9ed7cc55c7463e0fb2cb1de3a31e887cdc2f5ff13b11cc6dd30a8f877f1dd6a7
font_01_sfnt_off000041e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41E5 9664 bytes
SHA-256: 2f2b8618cf941d247a6c9fb17bbcdae5b66c86a691f8e48c66cd18abcdbb3653

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