Malicious PDF — malware analysis report

Static analysis result for SHA-256 1949968ed90876fa…

MALICIOUS

PDF

37.0 KB Authoring application: Smallpdf Desktop
MD5: f7c9661824b1332b1633e44e88b7f337 SHA-1: 3a8d828b436fc6a1262438cfa61a8b1bcf7e7aca SHA-256: 1949968ed90876fa317b6177fd8f731fc3a1d915531ccab74e12fc8bc7efb7a1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO link farm attack. It contains a large number of embedded URLs pointing to other PDF files hosted on various domains. The document body, though partially corrupted, appears to be a lure related to demographic transition models, possibly to disguise the malicious intent. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to distribute malicious content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.paradymearmor.com/uploads/1/3/0/2/130272478/pizel-wuzapivex-jefafazijag.pdf
    • http://weblifefinancial.com/uploads/1/3/0/7/130775352/melidozuwujonuzojivu.pdf
    • http://bitmoremarketing.com/uploads/1/3/0/5/130589444/9303805.pdf
    • http://bilicichconsulting.com/uploads/1/3/0/5/130543985/jodoruvopusinar-tagosatako-zagolajo-farorawixaw.pdf
    • http://spicyideas.com/uploads/1/3/0/6/130605432/d423886fd437c07.pdf
    • http://premiereathleticrecruiting.net/uploads/1/3/0/5/130550938/revoxe.pdf
    • http://elitetattooneedles.com/uploads/1/3/0/6/130621213/wumigomasud.pdf
    • http://obedientsoftware.com/uploads/1/3/0/5/130544230/8ae79.pdf
    • http://quintepaddlingclub.com/uploads/1/3/0/8/130813536/2341164.pdf
    • http://morbegnoclassica.com/uploads/1/3/0/7/130739363/eb4ac7ceca3.pdf
    • http://aspenleafproductions.com/uploads/1/3/0/7/130739662/wanulij.pdf
    • http://chinaesp.net/uploads/1/3/0/6/130621223/07dca8bb17ce0d1.pdf
    • http://galatians67.com/uploads/1/3/0/6/130639241/xuporamemogeju.pdf
    • http://helpdesk.techbrain123.com/uploads/1/3/0/5/130540155/xozupevebusamewisut.pdf
    • http://seeseeme.net/uploads/1/3/0/4/130435848/9fc49c9fd7dc.pdf
    • http://churchesinmilwaukee.com/uploads/1/3/0/4/130436007/74ddfd.pdf
    • http://at9x.com/uploads/1/3/0/4/130488101/4e1b5a5.pdf
    • http://www.brabazonmagic.com/uploads/1/3/0/8/130873802/3160935.pdf
    • http://a1381800xstreamtravel.xsideas.com/uploads/1/3/0/3/130324050/130324050.html#characteristics+of+stage+3+demographic+transition+model

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000323f.bin
5713c6eeef300c3f189f84ced0c974499cb37b0ccda174d42e4cb98dfb8df651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x323F 8092 bytes

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