Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b98b145613721f…

MALICIOUS

PDF

46.1 KB Authoring application: Serif PagePlus
MD5: f72107fbf42b9b559dbd27c767d82b56 SHA-1: 1f4551b3783e5ee57c5ea09fd1271c5560355555 SHA-256: 03b98b145613721fe2026319e95265158b15e10b57385ad445c3f65a51559ff8
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to numerous PDF files hosted on various domains, suggesting a tactic to manipulate search engine results or distribute malicious content. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further confirm the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://s-2-r.com/uploads/1/3/0/4/130477490/fozaxodiruwefutire.pdf
    • http://baylasunhotel.devsite-1.com/uploads/1/3/0/4/130476192/likomegitat-latinaxo.pdf
    • http://betterforlincoln.com/uploads/1/3/0/2/130288520/9679085.pdf
    • http://ncmusictherapy.org/uploads/1/3/0/4/130476859/579865a.pdf
    • http://northernwellnesscoaching.com/uploads/1/3/0/3/130312944/lanovifolil-pojibuj-nibudajo-rolazelamalogi.pdf
    • http://homerepairstjoseph.com/uploads/1/3/0/7/130739348/zifopewakovosusi.pdf
    • http://rajaampatdiveguide.com/uploads/1/3/0/7/130776366/roniwiwuxowivug.pdf
    • http://feedyourfriendsvb.com/uploads/1/3/0/4/130477252/jomejeniko.pdf
    • http://vintage-guitar.net/uploads/1/3/0/6/130605312/e60a31512.pdf
    • http://plussizeweddingdressesvermont.com/uploads/1/3/0/5/130551581/245407.pdf
    • http://summervillepsych.com/uploads/1/3/0/4/130483351/2678419.pdf
    • http://www.derekegede.com/uploads/1/3/0/6/130605482/3640556.pdf
    • http://dysfunctionalapparel.net/uploads/1/3/0/6/130639812/5367539.pdf
    • http://wcd-27zj6git.mgh-r.ch/uploads/1/3/0/6/130604025/130604025.html#aadhar+card+address+change+form+in+punjabi
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003164.bin
eb63019c2fdeddc7882e41e09118508b8870ecef145127dba2b544096f705635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3164 14036 bytes
font_01_sfnt_off00005bbd.bin
995603fbf71948a1b5a786437038320bc10e774898263d85335d4667021a04f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBD 7924 bytes

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