Malicious PDF — malware analysis report

Static analysis result for SHA-256 58201c0033291dc9…

MALICIOUS

PDF

70.5 KB Created: 2021-02-15 21:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8412730c6ff86d1e808f5792bd5e32bd SHA-1: 2cfd36a0fca9086d38e7678fc559330332399e03 SHA-256: 58201c0033291dc991442ee2c5474e737a2ab7da73a36dfb8457d167eb41fc23
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are dynamically generated or use common SEO spam patterns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing or trojan distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or malware download.

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://bologen.ru/wix?keyword=clark+county+school+district+calendar+2020-21
    • https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/819576.pdf
    • https://sipelebe.weebly.com/uploads/1/3/4/3/134312525/kaliret.pdf
    • https://femobideja.weebly.com/uploads/1/3/4/7/134735935/sixobaganajoguxaw.pdf
    • https://cdn.sqhk.co/lagazowasobo/gfijijK/fazutasige.pdf
    • https://bezijenogekise.weebly.com/uploads/1/3/4/8/134875893/bovuponukuzukukura.pdf
    • https://bununijadepijag.weebly.com/uploads/1/3/5/2/135298825/jowobikixipojuboxiv.pdf
    • https://cdn.sqhk.co/zefafulolit/jegepgc/sirolimus_side_effects_long-_term.pdf
    • https://cdn.sqhk.co/kososojog/hfji4jc/bulojosadiwuxuk.pdf
    • https://zuduloto.weebly.com/uploads/1/3/4/6/134623707/ebf2dacac6d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xijuxosisomuna/2472488554.pdf
    • https://s3.amazonaws.com/xalexojaxipud/philakone_s_cryptocurrency_superstar_trading_guide.pdf
    • https://s3.amazonaws.com/tamovagag/lipegitatajifivabil.pdf
    • https://s3.amazonaws.com/xapijifas/62557281333.pdf
    • https://s3.amazonaws.com/ponivotigegepub/aflac_cancer_wellness_benefit_claim_form.pdf
    • https://s3.amazonaws.com/tesasubawalozan/jugekiwekesejitukefej.pdf
    • https://s3.amazonaws.com/petikamov/sosibetogopojalogugux.pdf
    • https://s3.amazonaws.com/gelawiweza/chitralekha_old_movie_songs.pdf
    • https://s3.amazonaws.com/kotidox/letterhead_design_template_vector.pdf
    • https://s3.amazonaws.com/tumuzu/85976705085.pdf
    • https://s3.amazonaws.com/kigavanus/wovabamezaguxinu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6c8.bin
84de2cfaac0780e70ba20ba8975dd0068654858d9390721eb92eb7bef2a7c0ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C8 5456 bytes
font_01_sfnt_off0000e95d.bin
ac202d7478a398f3b6f84d38ae2059c3c2f02bedf9281c790ddc0be39ce6914a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE95D 10344 bytes

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