Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89c718f62fb5f5a…

MALICIOUS

PDF

77.5 KB Created: 2020-11-24 10:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5e80261d0a071e1db1cd66e331fa2b0 SHA-1: 1b3b579672e28daf9dffcc1419482ad3303e68d4 SHA-256: f89c718f62fb5f5af36904b2a102d0440053130d97358d18e5f24d2a6834df2e
244 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to disposable hosting services and redirectors, indicating a link farm designed to distribute malicious content. The presence of a link to 'ggtraff.ru' with a 'utm_term' parameter suggests a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=awakened+vindictus+private+server
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5fbadfdb2355d.pdf
    • https://naxigekaserudo.weebly.com/uploads/1/3/4/6/134644932/barujokaj-donenadideko-zokitamoderej-dalimew.pdf
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/7455357.pdf
    • https://diwapexag.weebly.com/uploads/1/3/4/4/134484560/4714263.pdf
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/4954300.pdf
    • https://basotode.weebly.com/uploads/1/3/4/6/134691624/0c8cc9969f7ae.pdf
    • https://todijaxazifaro.weebly.com/uploads/1/3/4/3/134342800/3072404.pdf
    • https://tupipukevoluda.weebly.com/uploads/1/3/4/0/134041298/boregigijorop.pdf
    • https://cdn-cms.f-static.net/uploads/4475730/normal_5fa55bc08abcb.pdf
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5fafd86c4c472.pdf
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/manomizu-xedel-vijof-tavojobopez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f60d0160-ed03-47da-a0ff-ec633b28a1fb/14646671010.pdf
    • https://uploads.strikinglycdn.com/files/14aa91da-c378-41bf-bb2f-e1ab64bd01d1/summon_greater_demon_pathfinder.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69b.bin
34f65c711168ba39c2cdb3bcff66f321a71da3ace897b00015fb55ba5e2bdcf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 5240 bytes
font_01_sfnt_off0000e896.bin
1ddadb650c576459791eb150f1c4b271db88391a3ecb7908f5d4e23b81d42a9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE896 12932 bytes
font_02_sfnt_off00011291.bin
b154442755bc3c391f81e311544983ec0b42042585924112257ecc948dec0917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11291 16588 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.