Malicious PDF — malware analysis report

Static analysis result for SHA-256 33429454821734ac…

MALICIOUS

PDF

42.9 KB Created: 2020-04-02 03:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fea688489eb03963f6e2ce753074e945 SHA-1: 08898f40d0ff9f8710b860cffa31de9b710d838a SHA-256: 33429454821734ac2293267d2a0f2029d0be3fffaf2a67206c562f166e3ebe32
64 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body, though heavily obfuscated, contains a reference to a school hymn and the tool used to generate the PDF, suggesting a deceptive lure. The primary heuristic indicates a link farm, and the embedded URLs point to various domains, likely part of a coordinated effort to distribute content or malware.

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://white-trailer-m-253ts.net/uploads/1/3/0/5/130590244/130590244.html#himno+de+las+escuelas+secundarias+generales+de+puebla
    • http://uprightsolutionsbpo.com/uploads/1/3/1/0/131069992/179303.pdf
    • http://smashdpotato.com/uploads/1/3/0/2/130289205/bigadi.pdf
    • http://designer-luxury-closet.com/uploads/1/3/0/6/130639146/4092948.pdf
    • http://blackoutmotorsports.com/uploads/1/3/0/8/130874026/7146453.pdf
    • http://centralfloridapavers.org/uploads/1/3/0/7/130738680/6711940.pdf
    • http://simplifinding.com/uploads/1/3/0/7/130739492/7fc284b5c.pdf
    • http://huntressridingaparel.com/uploads/1/3/0/6/130639764/tilijijemed.pdf
    • http://rgbcltd.com/uploads/1/3/0/9/130969046/redomuzemidajogimawi.pdf
    • http://betacounseling.com/uploads/1/3/0/6/130639310/fuzuw-nigimoneb-rekikobagigapi.pdf
    • http://marlertowing.com/uploads/1/3/0/5/130551564/9470386.pdf
    • http://entropiacollective.com/uploads/1/3/0/9/130969485/f1d3a.pdf
    • http://audreyjclimbs.com/uploads/1/3/1/0/131070727/tuzuzupunezaso.pdf
    • http://byvernawonderlust.com/uploads/1/3/0/7/130776254/kugogapafavov.pdf
    • http://leromaetravel.com/uploads/1/3/0/6/130640219/wegowobeminir.pdf
    • http://innovativegloballogistics.com/uploads/1/3/0/2/130291593/0883cb8f6.pdf
    • http://ritelanerentals.com/uploads/1/3/0/4/130488414/464f47c6de8b.pdf
    • http://grupoinmobiliariogarcia.com/uploads/1/3/0/8/130813985/dobixalaxaxijeduji.pdf
    • http://everlastingrender.com/uploads/1/3/0/5/130550848/zegivopukelikavow.pdf
    • http://3dsaps.com/uploads/1/3/0/7/130740443/difupa.pdf
    • http://apluspharm.net/uploads/1/3/0/6/130621839/mogidabetise_ganuta_tizuwibefizim_votik.pdf
    • http://gaithersburgcarpetcleaning.biz/uploads/1/3/0/6/130620694/0519f45.pdf
    • http://traceelements.design/uploads/1/3/0/2/130291673/pegeg_gobikevasivobu_voxaxojujuter_bewimunogi.pdf
    • http://clinicalads.com/uploads/1/3/0/5/130546415/19860e165cd4.pdf
    • http://spectrum-capital.com/uploads/1/3/1/4/131406387/7787816.pdf
    • http://clinicalads.com/uploads/1/3/0/5/130546

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074d7.bin
9fa6dfd9d0ca56ce5b820a6083bf8385fb3d8c64e0cf3c161240049494589d85
pdf-font-stream PDF embedded font (sfnt) at offset 0x74D7 8752 bytes
font_01_sfnt_off000094dc.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x94DC 16036 bytes