Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a4a3e773fd0895…

MALICIOUS

PDF

43.3 KB Authoring application: Poppler-utils First seen: 2020-09-24
MD5: a909f352352c7960fd38227f942a5183 SHA-1: 84ab5319412b5e26e971359684e8b2db2653f9c8 SHA-256: 80a4a3e773fd0895da04ef3a2ad60086906493134c4d14f0afb2a99fb82643cc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier further support its malicious nature. The embedded URLs are likely used to distribute phishing content or SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://lazakezopazepan.weebly.com/uploads/1/3/0/2/130289724/xokake_gevodezefoti.pdf In PDF document text
    • http://mycommentsandthoughts.com/uploads/1/3/0/5/130539702/mofagu_dowakujamuz_zomimeromabevat.pdfIn PDF document text
    • http://sosutuj.thepeacerailway.org/uploads/2020/01/28/7830965.pdfIn PDF document text
    • http://smgoldrup.com/uploads/1/3/0/4/130494172/dagiviba.pdfIn PDF document text
    • https://mejefuris.weebly.com/uploads/1/3/0/6/130605218/3b4c2e9462c.pdfIn PDF document text
    • http://sophiesonia.com/uploads/1/3/0/2/130288412/dc28a6629dcc6.pdfIn PDF document text
    • http://cheltenhamgreens.org/uploads/1/3/0/5/130544413/c2163f094fd.pdfIn PDF document text
    • https://pukitexe.weebly.com/uploads/1/3/0/3/130313480/ff7535ffd.pdfIn PDF document text
    • https://filevarosebili.weebly.com/uploads/1/3/0/5/130589427/nexoziwerales_jenifikesa_worojope.pdfIn PDF document text
    • http://jurongdistrict22.com/uploads/1/3/0/6/130621460/pudopovopik.pdfIn PDF document text
    • http://dera.missellieganza.com/uploads/2020/01/29/97fdfceaecd08a9.pdfIn PDF document text
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/3/130323556/130323556.html#rollercoaster+tycoon+touch+tipsIn PDF document text
    • http://linux.thai.net/projects/fonts-tlwgIn PDF document text
    • http://www.thaitux.infoIn PDF document text

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_off00001338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1338 8176 bytes
SHA-256: 41f5a57766b40424940570795de17f70b2cf445f2bdc18b9b31f4f1bfee4357e
font_01_sfnt_off00006115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6115 10292 bytes
SHA-256: c7143368894299a997ed09f05024df052d964886bc902d598de4a6791c50751f

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