PDF malware analysis — malicious · be5adf045e3cda1a

MALICIOUS

PDF

36.4 KB Created: 2020-04-03 02:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: bdac2f1b1f2e5f764faea9db708f54ec SHA-1: 96880c923bfe26feb2d54ccc4b2fbb63e509d6c7 SHA-256: be5adf045e3cda1aa14eb437b7eb0c59d85a566ba2dadb113c995c677298000e

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document exhibits characteristics of a link farm, containing numerous external URLs pointing to other PDF files. The primary heuristic, PDF_SEO_LINK_FARM, indicates a large number of these links, suggesting a coordinated effort to manipulate search engine results or distribute content across many domains. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample, and the document body contained mostly garbled text and embedded URLs, reinforcing the interpretation of a link farm or content distribution mechanism.

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.
External URI info PDF_URI

PDF contains an external URL action
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://aclaytonmaintenance.com/uploads/1/3/0/5/130547112/130547112.html#kenmore+digital+bread+maker
- http://thepersuademe.com/uploads/1/3/0/6/130604169/woletuzukumoj.pdf
- http://bandscontactingpainters.com/uploads/1/3/0/4/130489725/vesuvabejibibiga.pdf
- http://7daysfresh.info/uploads/1/3/0/7/130775049/4cac382cbf6.pdf
- http://mrsbordelon.com/uploads/1/3/0/3/130323211/zozosizofo.pdf
- http://yesjfwc.org/uploads/1/3/0/3/130379294/3a293.pdf
- http://6thfloormusic.com/uploads/1/3/0/6/130621298/wezuz.pdf
- http://protectorintegratedsecuritysystem.com/uploads/1/3/1/3/131380210/zirelogurejetum_kivawarozaxit_vetemab_xusulukagem.pdf
- http://techmoldingsolutions.com/uploads/1/3/0/5/130544318/bcb22631857282b.pdf
- http://greenleeboutique.com/uploads/1/3/0/5/130540065/zesubixiwufosubidul.pdf
- http://freehotyoga.com/uploads/1/3/1/4/131454222/1276815.pdf
- http://kelleycarney.com/uploads/1/3/1/3/131383515/9359793.pdf
- http://thewhitepearcollective.com/uploads/1/3/1/4/131407632/8519003.pdf
- http://yooni.org/uploads/1/3/1/3/131380969/wegepevikojaja.pdf
- http://mahafarhoud.com/uploads/1/3/0/9/130968960/477183b.pdf
- http://orebrohembygg.se/uploads/1/3/0/2/130289252/edc39abb591.pdf
- http://nmsfr.com/uploads/1/3/0/6/130640197/pebonatena.pdf
- http://asiatikaperu.com/uploads/1/3/1/3/131380828/lizapapuvuxel.pdf
- http://natdboon.com/uploads/1/3/0/6/130620251/sonefujezixav-mawaromon-xosakuseb-bipetuze.pdf
- http://wipethefrog.com/uploads/1/3/0/7/130775634/470521.pdf
- http://kintsukuroionlittlemountain.com/uploads/1/3/1/4/131453100/770d351.pdf
- http://servicedogsforvets.com/uploads/1/3/0/5/130543239/durofomimeramo_duxitipazododus_rewiwolopuda.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000066fe.bin` `596a9b763b664495a42091c00330c753d0c903ed359fd4c2a641c142635d39ab`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66FE	7472 bytes

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