Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc35a4101e7e1fe…

MALICIOUS

PDF

46.3 KB Authoring application: Smallpdf Desktop
MD5: 3f7ed03ae578c55942d38155d8113f50 SHA-1: fc9394b9f97572cc583515f15501b95558d345f9 SHA-256: 8cc35a4101e7e1fed0451c169f0494da0d36e53931fd76c96399ddb98e3e1b51
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm for SEO purposes. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' suggests a phishing or traffic redirection scheme. The embedded URLs are likely part of this redirection, aiming to lead users to malicious content.

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://unitedstatesyearbooks.com/uploads/1/3/0/3/130323555/tepiwavizif.pdf
    • http://mb-spot.com/uploads/1/3/0/4/130483653/mumofamekuji-pasafus-wunokukiziduze.pdf
    • http://alohabrewed.com/uploads/1/3/0/5/130550833/tirudozora.pdf
    • http://flipur.com/uploads/1/3/0/6/130639442/78ce368fea8.pdf
    • http://wpdogs.com/uploads/1/3/0/3/130379179/397f4cd.pdf
    • http://forloveandjustice.com/uploads/1/3/0/3/130313504/vubotemaz.pdf
    • http://bryhern.com/uploads/1/3/0/2/130288318/lakewirifosasap-fiwafidadod.pdf
    • http://solarsuddzllc.com/uploads/1/3/0/4/130483487/3872917.pdf
    • http://torndowncircus.com/uploads/1/3/0/7/130776558/neverejexubowo.pdf
    • http://yourpracticemultiplier.net/uploads/1/3/0/4/130483650/149114.pdf
    • http://liveloveindigo.com/uploads/1/3/0/8/130873841/113babadb8206.pdf
    • http://shadowhorseprodcutionsllc.com/uploads/1/3/0/5/130590588/514f179de0.pdf
    • http://pringleswrap.com/uploads/1/3/0/6/130620370/karivizowofab-jefuvi-dabanona-xonidawagate.pdf
    • http://lasvegasreservestudy.com/uploads/1/3/0/6/130639872/zonax.pdf
    • http://mhsbooster.bluewireweb.com/uploads/1/3/0/3/130323421/c7ef0cb1.pdf
    • http://cherry-cherie-creations.com/uploads/1/3/0/2/130289247/gonipetinonatox.pdf
    • http://baffen35.com/uploads/1/3/0/2/130272250/2952094.pdf
    • http://yourstoryof.com/uploads/1/3/0/6/130604772/junamanewelu-xugeviw.pdf
    • http://jakeneuman.net/uploads/1/3/0/5/130539108/balefus_raxipiru.pdf
    • http://floydfx.com/uploads/1/3/0/4/130436339/boneti.pdf
    • http://stuarttodduk.com/uploads/1/3/0/2/130289387/gifolazadipoxiwapep.pdf
    • http://suejardin.studio/uploads/1/3/0/7/130776104/ziruv.pdf
    • http://bubbcomics.com/uploads/1/3/0/4/130476491/labigafevanufoso.pdf
    • http://bangkokrepublik.co/uploads/1/3/0/6/130640198/jadoxozobele_govusebub_totilekodajijik.pdf
    • http://biyingkeshishicaizhucema.br3h.com/uploads/1/3/0/3/130312972/130312972.html#american+gods+neil+gaiman+pdf+espa%C3%B1ol

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e0b.bin
fe199287ca87f325754d122afe9706e80b7cc45b7f257a53d1ddab3b73ac5cc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E0B 10252 bytes

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