Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c382f40771859b…

MALICIOUS

PDF

28.1 KB Authoring application: pdf-parser
MD5: 29d62699972e392d7d58b1c1070d38f2 SHA-1: dde3d551ec4ad6f082e2f2e63c75f570568b5640 SHA-256: 63c382f40771859b35215cc251e432f325fcf014e9844395287284ebb7522f90
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links to external PDF files, indicating a link farm or SEO manipulation tactic. The ML classifier strongly suggests maliciousness, and the PDF structure points towards an attempt to distribute or redirect to numerous other malicious documents. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://me2007.com/uploads/1/3/0/6/130639161/d0880e8ca18.pdf
    • http://molallapool.com/uploads/1/3/0/7/130738735/vasegiwu.pdf
    • http://ecarsindia.in/uploads/1/3/0/4/130488736/661088.pdf
    • http://cloudaccountantaccelerator.com/uploads/1/3/0/4/130483216/e7c5891.pdf
    • http://healthcoachbloggers.com/uploads/1/3/0/6/130620416/lagenikirigulimes.pdf
    • http://badgeyourclassroom.com/uploads/1/3/0/7/130776102/pinopimuxu.pdf
    • http://tiffanyhdesign.com/uploads/1/3/0/6/130639516/85d897eea6.pdf
    • http://mountainmodelaires.org/uploads/1/3/0/7/130775522/6598768.pdf
    • http://mwwrenovations.net/uploads/1/3/0/2/130288644/morininutaf-lozanoteto-solijokezaxolil-zuvisapi.pdf
    • http://noahsteinman.com/uploads/1/3/0/5/130540507/kulorepelarifata.pdf
    • http://treshaimsportfolio.com/uploads/1/3/0/4/130489371/tubowilafoguf.pdf
    • http://cpanel.paulbartonmusic.com/uploads/1/3/0/5/130539354/jujumerilukul_bosojexeg.pdf
    • http://designboxie.com/uploads/1/3/0/6/130620395/1160ae3482b.pdf
    • http://mx59.farmfreshsoaps.com/uploads/1/3/0/8/130814531/339b235c31.pdf
    • http://chihuahuafrentealcambioclimatico.com/uploads/1/3/0/4/130489417/5041852.pdf
    • http://myeneeproject.com/uploads/1/3/0/6/130640119/700dd87afc48.pdf
    • http://excelsior-media.com/uploads/1/3/0/2/130289271/tixazufapamal_zefeve_nasan.pdf
    • http://nationalpoolinspection.com/uploads/1/3/0/3/130323158/7542309.pdf
    • http://shannonmarieryan.com/uploads/1/3/0/4/130478205/95d99e6.pdf
    • http://painfulhip.org/uploads/1/3/0/6/130639269/torotutajuser.pdf
    • http://pigga.com/uploads/1/3/0/3/130313641/d38bc60b1c.pdf
    • http://www.thesaintanthonydinnertheater.com/uploads/1/3/0/6/130603842/vedisojar.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000434b.bin
b5a65ae483a1702eb946e8f2d4bb7b47e335c4c759307c9627820bcdd69ab85c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x434B 7640 bytes

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