Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1efccf7a42951f7…

MALICIOUS

PDF

42.6 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 7c3e8550f641bbfde99c0cd02d312e2b SHA-1: bea3553bd6b9350a065f8d6e317a62c2fdbb6673 SHA-256: a1efccf7a42951f76229a3aaf1fc5e4b225792961eecdb0cc140dd667bc7c1dc
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique commonly used for SEO poisoning or to direct users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted, and the document body text is heavily obfuscated and truncated, preventing a more detailed analysis of the lure.

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 http://redbolero.com/uploads/1/3/0/4/130476152/6643975.pdf In PDF document text
    • http://wastedwillie.com/uploads/1/3/0/4/130479513/1727923.pdfIn PDF document text
    • http://gowickedkettlecorn.com/uploads/1/3/0/3/130379445/dugikufip-kidifax-fumawun.pdfIn PDF document text
    • http://norwoodhighschool.net/uploads/1/3/0/5/130551116/bofut-kovoz-bijosaki-xusobunap.pdfIn PDF document text
    • http://memfeet.com/uploads/1/3/0/4/130489019/juzawitaraxufi_tulexusofuba.pdfIn PDF document text
    • http://canberrabirthservices.com/uploads/1/3/0/3/130323106/15ef21917226.pdfIn PDF document text
    • http://strawberrygoosephotography.com/uploads/1/3/0/3/130313157/1738b2b244a.pdfIn PDF document text
    • http://kodzie.com/uploads/1/3/0/6/130604874/3672000.pdfIn PDF document text
    • http://uic-vie.weebly.com/uploads/1/3/0/4/130435876/rorav-gowozixupokep-xudir-kerijowa.pdfIn PDF document text
    • http://novific.com/uploads/1/3/0/6/130603764/xudidukun_dazavugu_minulekaviripe.pdfIn PDF document text
    • http://mrhowe.org/uploads/1/3/0/2/130291531/130291531.html#somewhere+over+the+rainbow+on+ukulele+lessonIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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_off00001334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1334 9320 bytes
SHA-256: cc8f54857657496a88e7fcc98cf546b3f41322089d25ed46822e20fa882b1497
font_01_sfnt_off00005f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 16160 bytes
SHA-256: 32bdc4d24c5e1411dff6a7cb0e11b4db57f258f5f1aebd915c07bb0c4fe5be7e

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