Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52ad4c597ed3792…

MALICIOUS

PDF

56.5 KB Created: 2020-10-05 17:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b482b4fa8f7c998f66b6a49a0b5aa6ab SHA-1: 27c1cada2c32ce7856615d11e301e496399e46bc SHA-256: a52ad4c597ed3792ed1f37a63be7a475b99db94056513b83a1232559c4bb3796
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs point to known malicious infrastructure, suggesting the primary goal is to lure users to malicious sites. No scripts were extracted, but the sheer volume of outbound links indicates a high likelihood of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://cctraff.ru/strik?keyword=natasha+benningfield+love+like+this
    • http://rivazo.stonewallsaddles.com/uploads/1/3/1/0/131070442/d60f7c.pdf
    • http://files.hauariki.com/uploads/1/3/2/6/132681479/finodetelakije.pdf
    • http://lodol.centralartrail.com/uploads/1/3/1/4/131409909/524ec2f51.pdf
    • http://silugurip.crawfordphoto.org/uploads/1/3/2/6/132695478/gomegobewe.pdf
    • https://site-1039608.mozfiles.com/files/1039608/95816796051.pdf
    • https://site-1038357.mozfiles.com/files/1038357/fotoxulokezujoz.pdf
    • https://site-1038431.mozfiles.com/files/1038431/35705000485.pdf
    • https://site-1040175.mozfiles.com/files/1040175/4619603340.pdf
    • http://files.michael-sloan-equalizer.com/uploads/1/3/1/3/131381078/501b8f993a7da.pdf
    • http://files.teamgodent.com/uploads/1/3/2/7/132740606/wisez.pdf
    • http://files.freestylewordplay.com/uploads/1/3/0/9/130969663/mosajog_vawosag.pdf
    • http://files.theboho.ca/uploads/1/3/0/9/130969438/budagizime_leganaz_xobofipim_vajeragatigedat.pdf
    • https://uploads.strikinglycdn.com/files/b7d27a89-a30c-4d6f-8080-dde187b397f6/dusajotakav.pdf
    • https://uploads.strikinglycdn.com/files/c5ca1154-4006-48d9-8b33-2f7704e75fd3/76818231945.pdf
    • https://uploads.strikinglycdn.com/files/a2cd871a-d493-441e-aebc-034858e06126/48929182683.pdf
    • https://uploads.strikinglycdn.com/files/d15bc02e-9d7d-4d66-bdd7-f3484de0179c/63309550366.pdf
    • https://uploads.strikinglycdn.com/files/d0aea4d7-ecd1-469c-ae8d-68cc796dca26/mezufujurisetigibarotag.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007350.bin
355dd0a1ed6650c0ad981ca7e6400792bb910476c0c1c1a72b3afe72044a669e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 5308 bytes
font_01_sfnt_off0000856e.bin
470ba3bfbdb93721e75f7a9d462f3b057911d43c6278c2b96f8a666f7a0aba6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x856E 15224 bytes
font_02_sfnt_off0000b48e.bin
9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13
pdf-font-stream PDF embedded font (sfnt) at offset 0xB48E 18776 bytes