Malicious PDF — malware analysis report

Static analysis result for SHA-256 8625f17ba565d75b…

MALICIOUS

PDF

58.6 KB Authoring application: Poppler-utils
MD5: 5f0e01f4c5791ed4f1a0236d6e77baf9 SHA-1: 8b69a40123b5cb6bdf34604bd09f88f86c8c6aea SHA-256: 8625f17ba565d75b510df529433a693dfe4a0279e38a193f996b139212d7ea65
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files on various domains, indicating a link farm or content distribution network. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the sheer volume of external links is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pocdogs.org/uploads/1/3/0/7/130775797/6700221.pdf
    • http://www.miamitownshiphealthandwellnesscenter.com/uploads/1/3/0/6/130639266/45b7c4db132d.pdf
    • http://doubleeagleadvisers.com/uploads/1/3/0/6/130604764/mowavu_giwimiwelowikuf_bamobo_zafoliworo.pdf
    • http://zoeapos.com/uploads/1/3/0/7/130740493/5b5d9e6b7253a.pdf
    • http://chitowngala.com/uploads/1/3/0/2/130270843/4897382.pdf
    • http://1hrloan.com/uploads/1/3/0/5/130590355/tojafolimiji.pdf
    • http://brexitpartychichester.co.uk/uploads/1/3/0/5/130539825/e9a1e88b92.pdf
    • http://3rlco.com/uploads/1/3/0/7/130775355/6886084.pdf
    • http://siberianneva.com/uploads/1/3/0/6/130640179/2363021.pdf
    • http://backshops.host/uploads/1/3/0/4/130435570/cb60b5fb114.pdf
    • http://sacredfeminineuprising.com/uploads/1/3/0/3/130323616/romupunosemin-numorebaje.pdf
    • http://nbcunivcareers.com/uploads/1/3/0/7/130739597/linerukowuvowob-zezelolorifa-zilutagosufaxat.pdf
    • http://bostonchaptermerch.com/uploads/1/3/0/5/130540009/54a47de.pdf
    • http://digitalvitamininc.com/uploads/1/3/0/4/130476555/8798820.pdf
    • http://www.boylston275.org/uploads/1/3/0/4/130489152/kaxewuxoj_xedaxuzatoje_gutatalebe_xegunepunina.pdf
    • http://www.martinklass.com/uploads/1/3/0/5/130589373/5739859dad05.pdf
    • http://mail.themodernlover.net/uploads/1/3/0/9/130969598/538422.pdf
    • http://hostmaster.beruehrt-gefuehrt.de/uploads/1/3/0/7/130739117/koneforavipekuxetiki.pdf
    • http://cookesbooks.com/uploads/1/3/0/4/130488839/rexiwun.pdf
    • http://bradandmaria.com/uploads/1/3/0/6/130639849/338906.pdf
    • http://bryant-ratliffbuilding.com/uploads/1/3/0/5/130588438/2208f436ca6.pdf
    • http://drannmariehernandez.com/uploads/1/3/0/6/130605443/didinawufida.pdf
    • http://comedyshowcasedurango.com/uploads/1/3/0/8/130814085/dofideka_dixomikolu_zemisigimex_lamujosupawese.pdf
    • http://tdz539.bdgct.com/uploads/1/3/0/6/130604950/130604950.html#adrenal+cortex+zones+hormones
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001065.bin
b42c7123eef628f6575233bbd78b069f72987a56c3532d8b29b43b56e7c9e19a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1065 8956 bytes
font_01_sfnt_off00008329.bin
4d9ec2aec8f1ca6bebe1b56492fd55a77bba3a6e98efb76508c1b835d4eb9912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8329 2860 bytes
font_02_sfnt_off00008c9a.bin
ddc6c38a5929b263b215a5b0c7aa8b1a409f146866f06980111f9f21a6232bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9A 16036 bytes

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