Malicious PDF — malware analysis report

Static analysis result for SHA-256 b864385dbe90843f…

MALICIOUS

PDF

45.3 KB Authoring application: GIMP First seen: 2020-09-24
MD5: 669338547b0ee3e158ba2b8557d81af0 SHA-1: ccd826e5f45c806b57a35474d9ebf4c6ed8e7528 SHA-256: b864385dbe90843f94425d5d21e00ce6e844aeb8c2ee4d17ef8cf91e00346ca9
232 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly indicate a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests that this PDF might be part of a multi-stage attack where a password-protected archive is intended to be delivered next.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • 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 http://www.jackfrischonline.com/uploads/1/3/0/5/130588841/lewovira.pdf In PDF document text
    • http://pourspoutmanufacturer.net/uploads/1/3/0/8/130874246/d34594.pdfIn PDF document text
    • http://moofausa.secondwind.org/uploads/1/3/0/7/130739926/vawoxidemunekewad.pdfIn PDF document text
    • http://mta-sts.mx.legion22.org/uploads/1/3/0/6/130603842/tugubezusafuxuforewi.pdfIn PDF document text
    • http://2019.rocktherun4mda.org/uploads/1/3/0/7/130739945/2252841.pdfIn PDF document text
    • http://championtrikes.net/uploads/1/3/0/4/130476442/tizatafijopidororo.pdfIn PDF document text
    • http://everydayveganblog.com/uploads/1/3/0/7/130775027/sazobow_kisove_sujugo.pdfIn PDF document text
    • http://bg.atelier27.com/uploads/1/3/0/5/130545365/b7d22c3bb.pdfIn PDF document text
    • http://clarksurveyor.com/uploads/1/3/0/2/130272353/2187963.pdfIn PDF document text
    • http://reliancemedicalbillingsolutions.net/uploads/1/3/0/6/130622047/sinozeza_jenemebuval_kanawe_fadesaba.pdfIn PDF document text
    • http://www.six18gfx.com/uploads/1/3/0/8/130874316/ff58281ee6.pdfIn PDF document text
    • http://janes.business/uploads/1/3/0/4/130476628/tefenevafavi.pdfIn PDF document text
    • http://raykakobiella.com/uploads/1/3/0/7/130775979/gofibagu.pdfIn PDF document text
    • http://www.artbyjasminehenley.com/uploads/1/3/0/5/130539696/14717606.pdfIn PDF document text
    • http://pleasantunion51.com/uploads/1/3/0/5/130551323/577fd.pdfIn PDF document text
    • http://thediplip.com/uploads/1/3/0/2/130291489/7176084.pdfIn PDF document text
    • http://puremichiganfun.com/uploads/1/3/0/4/130483520/8687457.pdfIn PDF document text
    • http://jorgetorres-photo.com/uploads/1/3/0/6/130621643/2233908.pdfIn PDF document text
    • http://mendocinorose.com/uploads/1/3/0/5/130551299/zasesuwixox_fawujolaf_rapotex.pdfIn PDF document text
    • http://www.inspirationsbyingram.com/uploads/1/3/0/6/130605376/9568253810e4828.pdfIn PDF document text
    • http://healdsburgflowershop.com/uploads/1/3/0/3/130313148/kaxib-xavebure-kakobid-paweten.pdfIn PDF document text
    • http://hostmaster.jenniferanderson.co.uk/uploads/1/3/0/6/130604181/176889.pdfIn PDF document text
    • http://ketocoacher.com/uploads/1/3/0/5/130551176/gotuxosijo.pdfIn PDF document text
    • http://goblinstory.com/uploads/1/3/0/6/130640150/xukod.pdfIn PDF document text
    • http://mingshengyulechengxianjinbaijiale.br3h.com/uploads/1/3/0/5/130588394/130588394.html#infant+tylenol+dose+by+ageIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 7

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_off000031c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C9 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off00004946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4946 9316 bytes
SHA-256: 852f07a44cfcd210f3ab9c4144360ecf58db99a5799786d1b2ea3607dc3b6d8b

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