Malicious PDF — malware analysis report

Static analysis result for SHA-256 598bd282ded8efe8…

MALICIOUS

PDF

49.0 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: 3d025c2c2cf95c3b41c97a88ee8b8cce SHA-1: 59af75a8f7f828bba3a6587eb36339274e973adf SHA-256: 598bd282ded8efe893a08a0c9d9d5cf0097b7398e485099ff0907313544eb771
190 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, and includes a 'Download Now' call-to-action. This behavior is consistent with a phishing or scam lure designed to trick users into downloading potentially malicious files disguised as software cracks. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://brickhouseroofing.com/uploads/1/3/0/3/130313766/9734576.pdf In PDF document text
    • http://sawdustandboards.com/uploads/1/3/0/5/130539599/kozexufedupawofegori.pdfIn PDF document text
    • http://rafefovo.javaprog.online/uploads/2020/01/27/lenafukexagomuxakas.pdfIn PDF document text
    • http://tunaz.bitimecash.com/uploads/2020/01/27/mesidiga_kagor.pdfIn PDF document text
    • http://wovolap.galamosaic.net/uploads/2020/01/28/cfad1.pdfIn PDF document text
    • http://ruxizhang.com/uploads/1/3/0/5/130545365/nopofolozojomejud.pdfIn PDF document text
    • http://julaxawar.bibaandboba.info/uploads/2020/01/29/9031603.pdfIn PDF document text
    • http://charlestonvillagehall.co.uk/uploads/1/3/0/2/130270798/ludazisivod_sewerolumi.pdfIn PDF document text
    • http://scallywaggish.shop/uploads/1/3/0/2/130289292/ruvokep-gomikopexu.pdfIn PDF document text
    • https://nopetinabezapev.weebly.com/uploads/1/3/0/4/130435891/sobowijone.pdfIn PDF document text
    • http://22502119.nhd.weebly.com/uploads/1/3/0/4/130492315/zaxoxugude_lemofak_vegilapifukexav.pdfIn PDF document text
    • https://veripuxena.weebly.com/uploads/1/3/0/3/130323984/5602eb.pdfIn PDF document text
    • http://mamajourneys.com/uploads/1/3/0/6/130621063/5f7aed81209.pdfIn PDF document text
    • http://sauerlandhypotheek.nl/uploads/1/3/0/6/130604340/130604340.html#emulator+8086+crackIn PDF document text
    • http://linux.thai.net/projects/fonts-tlwgIn extracted file (font_01_sfnt_off00006cb3.bin)
    • http://www.thaitux.infoIn extracted file (font_01_sfnt_off00006cb3.bin)

Related samples 8

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_off000013f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F6 8852 bytes
SHA-256: 031c0cf297812c7488d53c0e1d0fb0d2399a91afd26250fb474ff4760a7b8e3f
font_01_sfnt_off00006cb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB3 14772 bytes
SHA-256: fda6da4d5ba406858398fd6ed00de900dad0758fd48431d723324036a4e7c437

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