Malicious PDF — malware analysis report

Static analysis result for SHA-256 476c37c5aa89d4d9…

MALICIOUS

PDF

46.3 KB Authoring application: Serif PagePlus First seen: 2020-09-24
MD5: e6cd4cba6206d3ee30fc6ec279713862 SHA-1: fdd218466eaa055db49371b1f081d5f4854df3c5 SHA-256: 476c37c5aa89d4d9d96fd9bbe0deaa04e57b97396f3da941f2d05802c0dd1db6
192 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather as a container for these links. The primary attack pattern appears to be a link farm designed to manipulate search engine results or redirect users to potentially malicious content.

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 http://truedefinitiondentallaboratory.com/uploads/1/3/0/2/130273571/34b444.pdf In PDF document text
    • http://frenchculinaryadventures.com/uploads/1/3/0/2/130287934/da794ccc63f0160.pdfIn PDF document text
    • http://apexairsoftus.com/uploads/1/3/0/7/130775557/2629867.pdfIn PDF document text
    • http://thejackedhipster.com/uploads/1/3/0/6/130603861/397132.pdfIn PDF document text
    • http://ubezpieczenia-czestochowa.eu/uploads/1/3/0/4/130476491/kelugope.pdfIn PDF document text
    • http://nekimastrategies.net/uploads/1/3/0/6/130621789/vofavik-xajajira-minid.pdfIn PDF document text
    • http://vexirmx.com/uploads/1/3/0/3/130313564/56e14e7.pdfIn PDF document text
    • http://maltaglasscreations.com/uploads/1/3/0/7/130740538/barawi.pdfIn PDF document text
    • http://lesliearcana.com/uploads/1/3/0/6/130603748/besogukexefot.pdfIn PDF document text
    • http://mrcrosbyswebsite.com/uploads/1/3/0/5/130543667/tekoxizomuguvit.pdfIn PDF document text
    • http://tiddlywikitips.com/uploads/1/3/0/8/130813120/dizasetawosigomovav.pdfIn PDF document text
    • http://beachgrandma.com/uploads/1/3/0/6/130604327/48abeb1ff.pdfIn PDF document text
    • http://coppersite.com/uploads/1/3/0/4/130477028/jesazikudepelu-vukod-jefidisu-lixibamozojodi.pdfIn PDF document text
    • http://1stollie.com/uploads/1/3/0/2/130289745/7260689.pdfIn PDF document text
    • http://boldexplorations.voyagerwebsites.com/uploads/1/3/0/6/130604371/130604371.html#types+of+addressing+modes+in+8086In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000378a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x378A 16088 bytes
SHA-256: 287b852d1c1b0334c7d2ab49fe8ac8ac5488f6edefc3e00d5eee83c7048b9cc5
font_01_sfnt_off00004bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEF 2652 bytes
SHA-256: 3d52fc27d04b8b84b219df719738f768697e09c2050136bc1fe69fcddf4eca6e
font_02_sfnt_off0000582a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x582A 8904 bytes
SHA-256: a0072a82acadfcaf5aea3bea016f10c461f7db60ff5cf00258aaf0f848a731d1

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