Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae60d0ccebd6fb0…

MALICIOUS

PDF

111.6 KB Created: 2021-04-14 06:51:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e7cb90ed00030cfa227742b87aa7a9ab SHA-1: da15258bb2b9dde6490059eff0baf469eab9d7e8 SHA-256: eae60d0ccebd6fb0baf6fa1a2123c9790687b7f629997a64b261729e0600eb68
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to redirectors and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The heuristic firings indicate the PDF is a malicious redirector and part of a link farm, with ClamAV identifying it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, contains text related to a '2005 dodge dakota factory service manual', likely a lure to entice users to click the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/strik?utm_term=2005+dodge+dakota+factory+service+manual In PDF document text
    • https://lugarulanug.weebly.com/uploads/1/3/5/3/135383187/f2bdf91d77d5a.pdfIn PDF document text
    • https://cdn.sqhk.co/zapoboveje/hchaQOi/barrett_jackson_scottsdale_2020_sold_sticker_girl.pdfIn PDF document text
    • http://bred-enligne.com/troy_bilt_riding_mower_battery_sizeqm7rq.pdfIn PDF document text
    • https://cdn.sqhk.co/sodelaranu/xgeFhaZ/52479665106.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/ieghXha/52176720233.pdfIn PDF document text
    • https://xudisuwovoj.weebly.com/uploads/1/3/5/4/135400752/2174411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488103/normal_604cd39f6a1cf.pdfIn PDF document text
    • https://rotolakudezi.weebly.com/uploads/1/3/4/0/134041133/5a340606c7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501360/normal_604e6a434d86b.pdfIn PDF document text
    • https://vilamewu.weebly.com/uploads/1/3/0/7/130775649/jujerasuwupeju_dagixoj_bitikogag.pdfIn PDF document text
    • http://haifaiv.ru/mogumoniradixono7bo12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_602fce1de50db.pdfIn PDF document text
    • http://nelodagavezes.mygamesonline.org/pawewugadipejowodalo.pdfIn PDF document text
    • http://bestita.space/ecological_solid_waste_management_actw85ty.pdfIn PDF document text
    • https://cdn.sqhk.co/pofifarim/Eiaegjp/cat_bird_call_australia.pdfIn PDF document text
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/dujejo-geximasexax-metomupukiwet.pdfIn PDF document text
    • https://cdn.sqhk.co/tojorovexuw/ghzP0ip/25504340949.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aecb35e-d295-4dfe-84f5-5b16f5b771cf/pilazetaxojezekidibojufo.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/kogosanaxog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b93c406-3f67-40f3-89f8-d801cca4c8a6/tatokosavilepa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E8E 5872 bytes
SHA-256: 315468bb3bfb4a4959a52ae1c04b42afc59d54e03639d038c70d7abfcc4471a9
font_01_sfnt_off00017292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17292 11308 bytes
SHA-256: 5769aa23592fe396a1edc4d55965f5ca06eeedd6752c09e9adc83059b02df36b
font_02_sfnt_off00019929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19929 16132 bytes
SHA-256: 6c511cd2548aab1566dad8f54fccf2be4cd056cf5a4d5d56937977fde9165995