Malicious PDF — malware analysis report

Static analysis result for SHA-256 5770536933408a4e…

MALICIOUS

PDF

44.8 KB Authoring application: PDF Studio First seen: 2020-09-24
MD5: e435be19eed716c27d1b7d3b2cf5e763 SHA-1: 10cf024d7f334f76d4a1f49b0646d333c3172b41 SHA-256: 5770536933408a4e92954fd84d7c4038233efe6a22ab29b08fa9888be24db38e
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though partially corrupted, contains text related to medical information ('cerebral abscess') which is likely a lure to encourage users to click the embedded links, such as the primary URL 'https://malidobatupi.weebly.com/uploads/1/3/0/5/130542872/ruwafufumu-mutitadefi.pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 https://malidobatupi.weebly.com/uploads/1/3/0/5/130542872/ruwafufumu-mutitadefi.pdf In PDF document text
    • http://speakeasyedc.com/uploads/1/3/0/5/130590531/lamafenugijufuk.pdfIn PDF document text
    • http://mindfulheartprograms.com/uploads/1/3/0/2/130289498/1421562.pdfIn PDF document text
    • http://naxuzat.multilinglab.ru/uploads/2020/01/28/3998011.pdfIn PDF document text
    • http://giftneat.com/uploads/1/3/0/4/130483266/bebowafo-juxaxi-lovowi.pdfIn PDF document text
    • http://secretcats.net/uploads/2020/01/28/zemejatovelajaza.pdfIn PDF document text
    • https://tixofusokeja.weebly.com/uploads/1/3/0/3/130313157/notiluv_bopaw.pdfIn PDF document text
    • https://worasapam.weebly.com/uploads/1/3/0/5/130541023/8760950.pdfIn PDF document text
    • http://vehicleloanusa.com/uploads/1/3/0/6/130621640/1653760.pdfIn PDF document text
    • http://moderntutoringandeducationservices.com/uploads/1/3/0/4/130436282/vebejubituwi-lekis.pdfIn PDF document text
    • http://nursingheart.com/uploads/2020/01/27/guzobudufejibuv-nutug.pdfIn PDF document text
    • http://mujad.igrarium.com/uploads/2020/01/27/8b7819364a3b.pdfIn PDF document text
    • https://lawijotigalaro.weebly.com/uploads/1/3/0/2/130289063/kewajitodagebekub.pdfIn PDF document text
    • https://buguzaragon.weebly.com/uploads/1/3/0/4/130483983/begodatexeka.pdfIn PDF document text
    • https://bikisebojumovov.weebly.com/uploads/1/3/0/3/130323475/9649e1.pdfIn PDF document text
    • https://lavupubekuwi.weebly.com/uploads/1/3/0/2/130289177/3343085.pdfIn PDF document text
    • http://dad.maquinariayequipoindustrial.online/uploads/2020/01/27/b9795d8.pdfIn PDF document text
    • https://zapekewagavupo.weebly.com/uploads/1/3/0/3/130313218/4784674c83.pdfIn PDF document text
    • http://xoganikodi.mycrazylove.com/uploads/2020/01/28/1253154.pdfIn PDF document text
    • http://bsa-sccc-pack301.com/uploads/1/3/0/6/130621402/130621402.html#common+cause+of+cerebral+abscessIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1587 8080 bytes
SHA-256: 52e1b9c20332508b61c0370ca90f795f842c5a5b2b5a1e15edb59a30f8dd0623

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