Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f897e2264addb8…

MALICIOUS

PDF

42.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 324cdaef1aecd092bf0999f4ef7ca670 SHA-1: 5c078d8c78f2875f4ac261569e50c86e3d393322 SHA-256: 35f897e2264addb8168ec9e9a77bf2eab3ce4e5d5e1f519d94d51394d4f95fac
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of SEO spam or a phishing campaign designed to drive traffic to malicious or low-reputation sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' further supports this assessment.

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://betterforlincoln.com/uploads/1/3/0/4/130489080/zudesinojupixik.pdf
    • http://syncomict.com/uploads/1/3/0/6/130604348/d79a4c4d5.pdf
    • http://pvff.org/uploads/1/3/0/4/130488370/747380.pdf
    • http://skynetdonate.xyz/uploads/2020/01/28/xemib.pdf
    • http://epicureanodyssey.net/uploads/1/3/0/7/130739528/supoxilubi-bofedunalof-gebeparodaza.pdf
    • http://bcrsa.org/uploads/1/3/0/6/130620948/musumetopakep_beterewenedu.pdf
    • http://ccamsolutions.com/uploads/1/3/0/3/130323235/3612515.pdf
    • http://scottbrackenridgebuilders.co.nz/uploads/1/3/0/6/130621211/rulike_majowajupob_lujurawalul.pdf
    • http://usamwv.com/uploads/1/3/0/5/130540366/5215048.pdf
    • http://darwinelitelandscaping.com/uploads/1/3/0/6/130639467/genexeloguxojod-xebunivil-xunativiso.pdf
    • http://vintagehomecharleston.com/uploads/1/3/0/2/130289498/larononatelaga_farovowoxik_konagiwaz_tixikidej.pdf
    • http://madewithlasers.net/uploads/1/3/0/6/130605069/wevepana.pdf
    • http://rehphotography.org/uploads/1/3/0/6/130605041/130605041.html#oxford+english+mini+dictionary+price+in+india

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a5.bin
109eb0684ebc0c30f4e9ef3b470500fc0361258614a812bbf03b9fe92030a02c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A5 8132 bytes
font_01_sfnt_off00005e5f.bin
32b54217619f9438721b423dc2f4f4da0f78781b0811ea49af2be6b0310ecf56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5F 16164 bytes

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