Malicious PDF — malware analysis report

Static analysis result for SHA-256 74345ac9297e3079…

MALICIOUS

PDF

75.8 KB Created: 2020-12-27 20:14:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb69360c8500000a5a865d934991e22b SHA-1: 75f94443dfe706488d1a2063090a7171b19480ab SHA-256: 74345ac9297e30791e44fb48c35b8821349e8c0ef113272f05030555ccfc6c0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, forming a link farm, and references a Black Friday deals theme in its metadata and body, suggesting a phishing or malware distribution lure. The presence of external URIs and a link farm indicates an attempt to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafffi.ru/strik?utm_term=black+friday+deals+on+tvs+at+walmart+2020
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/kozasoj-gapuro-zuwidaru.pdf
    • https://static.s123-cdn-static.com/uploads/4503617/normal_5fde2ffd7a453.pdf
    • https://xetebozeb.weebly.com/uploads/1/3/1/8/131872130/nulebalub.pdf
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/9867212.pdf
    • https://xelixexojiga.weebly.com/uploads/1/3/4/1/134108676/porep_pemixajezum.pdf
    • https://bunikesetula.weebly.com/uploads/1/3/0/7/130739723/9197415.pdf
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/dc0eb59.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/7e73c5aa-c66b-490b-88a1-ce7ef1eac278/katabaro.pdf
    • https://uploads.strikinglycdn.com/files/34ef1887-aff0-4a5c-acf1-1ccfe66dc2bc/55087985606.pdf
    • https://uploads.strikinglycdn.com/files/56eaa279-648b-4924-a97f-422e95f8e02a/88697862528.pdf
    • https://uploads.strikinglycdn.com/files/5d6ae00c-2a8c-4159-861f-def07fa168c5/warframe_melee_mods_guide.pdf
    • https://s3.amazonaws.com/sixolose/pilulasoruligasifumu.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9d3.bin
5b957231501528ab84803c472911a207b1b4274d8791ac26842eeb60ff6d539e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D3 5596 bytes
font_01_sfnt_off0000ecd9.bin
8f79db6a64ec7ff41361ec627de2fa29193d208fa8abdccb1f9de8132db72e39
pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 11092 bytes
font_02_sfnt_off00011298.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x11298 4324 bytes