Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6916366c44d0e20…

MALICIOUS

PDF

37.1 KB Authoring application: QPDF
MD5: 8f31084f1f9d032ef1f1c543244b0c7e SHA-1: 1b4fed16421f5ee7fbdea2152eacf138fdbd4c6f SHA-256: c6916366c44d0e20163df947dc4789a440c09aa99d442f6d66b6e05440014cce
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or redirection scheme, commonly used in phishing or malware distribution campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. No scripts were extracted from this sample.

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://talkupyouth.com/uploads/1/3/0/5/130544687/tawusa.pdf
    • http://militaryhomesaugusta.com/uploads/1/3/0/5/130588461/sepuwavu-lejesopid.pdf
    • http://thevitasana.com/uploads/1/3/0/7/130738848/befd6ecde7c.pdf
    • http://mail.airflowtactics.com/uploads/1/3/0/7/130740504/1195901.pdf
    • http://www.onelovehomehealth.com/uploads/1/3/0/8/130874122/nazazawok_kidavoxomaxemat.pdf
    • http://junkmarketgypsy.com/uploads/1/3/0/4/130483858/2802e5860.pdf
    • http://nuts4less.net/uploads/1/3/0/3/130379315/c91982f.pdf
    • http://cyber1risk.com/uploads/1/3/0/4/130477090/zaderigiberomobafut.pdf
    • http://www.algiers-tricentennial.com/uploads/1/3/0/7/130738836/2d311.pdf
    • http://oshey.space/uploads/1/3/0/5/130551726/8325342.pdf
    • http://streamboxtv.com/uploads/1/3/0/5/130544652/50f4c0.pdf
    • http://myangeliccouture.com/uploads/1/3/0/4/130483260/3449597.pdf
    • http://wildhorsesanctuary.net/uploads/1/3/0/4/130488073/1609cdda53.pdf
    • http://www.dogwalkinglc.com/uploads/1/3/0/7/130739968/wajijemusagejiwu.pdf
    • http://paitmencomp.com/uploads/1/3/0/2/130270831/wulutive.pdf
    • http://squirrelremovalknoxville.com/uploads/1/3/0/5/130551505/3f5e72f9.pdf
    • http://www.sgphysicstutor.com/uploads/1/3/0/5/130589161/3063847.pdf
    • http://d5i81.slpny.com/uploads/1/3/0/3/130379291/130379291.html#appsc+group+2+prelims+exam+paper+2019
    • http://mail.airflowtactics.com/up

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003394.bin
04e9a230d9fb20b64fdec5ddd4971b8ce7767c57538933aee6d41997578e028e
pdf-font-stream PDF embedded font (sfnt) at offset 0x3394 8156 bytes