Malicious PDF — malware analysis report

Static analysis result for SHA-256 261e0a72c7989fa8…

MALICIOUS

PDF

45.7 KB Authoring application: pstoedit
MD5: e2909ce883fcf15644406178714ece23 SHA-1: 603a7a6be416d3ffa5727be5182771a7b6b4ad50 SHA-256: 261e0a72c7989fa831f3993617c76b6943625d5e472c6f75b5188ec95837d79b
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with phishing or traffic redirection. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific payload.

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://charlottejackman.com/uploads/1/3/0/6/130604551/ccd5a02468464.pdf
    • http://toji.krasota12.ru/uploads/2020/01/28/somavel.pdf
    • http://keopukonacoffee.com/uploads/1/3/0/6/130620469/ravenuzenugafuk.pdf
    • http://optodev.org/uploads/1/3/0/2/130289696/3542681.pdf
    • http://xetenel.giktarin.ru/uploads/2020/01/29/tinukakile.pdf
    • http://socalhomesavers.com/uploads/1/3/0/5/130590763/1869639.pdf
    • http://kirstykemp.com/uploads/1/3/0/4/130483322/rumotopuxamofu.pdf
    • http://wybieracz.weebly.com/uploads/1/3/0/6/130639863/berukipuse_dumosevezunu.pdf
    • http://moxove.101doggy.com/uploads/2020/01/28/2170784.pdf
    • http://tisegume.promokot.info/uploads/2020/01/28/e7ea5ebd918.pdf
    • http://pierrecyr.ca/uploads/1/3/0/2/130287837/gujegowasa-fulomajisisop.pdf
    • http://staygraceful.us/uploads/1/3/0/4/130483821/fijakurilubane-mukig.pdf
    • http://leadershipmartialartsacademy.com/uploads/1/3/0/5/130589366/kaxipij-xuzewazimis-xazugu-duduzewufu.pdf
    • http://michaeljmaio.weebly.com/uploads/1/3/0/5/130551271/2937268.pdf
    • https://zinudikitewasag.weebly.com/uploads/1/3/0/5/130541221/mevuku_gazoruvis.pdf
    • http://dieporzellanklinik.de/uploads/1/3/0/6/130620431/sojaxaxavawituj-vimok-tevufezudorix-nonedelokebeg.pdf
    • http://practicaaudaz.com/uploads/1/3/0/2/130289204/1acc88d53677.pdf
    • https://pusuzifavawazu.weebly.com/uploads/1/3/0/6/130604363/linadakijepi-fikeberoze-naguzepe-weririnaxumagap.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130543980/fa6c6.pdf
    • http://berlin-sachsen-transport.com/uploads/1/3/0/5/130589179/jolopodedazejis_dijokof_lupaxijar_kotoxekuvisupar.pdf
    • http://excelsiorconstruction.us/uploads/1/3/0/2/130272963/zijavabaxudexiv-dasigapenazobu.pdf
    • http://memikif.techindulgence.com/uploads/2020/01/28/bea7519315f99ae.pdf
    • http://umbcs.com/uploads/1/3/0/6/130605112/130605112.html#the+reformed+faith+loraine+boettner+pdf
    • http://memikif.techindulgence.com/uploads/2020

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000179f.bin
e1c892b0fffe93d22beeee2e65413df96e91b57da06d1cc7455c9c3be054e97a
pdf-font-stream PDF embedded font (sfnt) at offset 0x179F 8372 bytes