Malicious PDF — malware analysis report

Static analysis result for SHA-256 14db93134b775c53…

MALICIOUS

PDF

79.2 KB Created: 2021-03-22 22:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 00182579a5488829edaeb0fb0d81f6b0 SHA-1: bcef4c7808f771043458440bc72db8f668fae607 SHA-256: 14db93134b775c5348b28014153c5a50e7b8259c8c48048d94881aec8643de37
254 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirectors and SEO link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains metadata related to 'Toro weed eater fuel line routing' and authoring application details, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=toro+weed+eater+fuel+line+routing In PDF document text
    • http://pogadai.xyz/levent_kitaplar_okuayqdk.pdfIn PDF document text
    • http://idealsit.fun/kozogegi2xa8k.pdfIn PDF document text
    • http://sodalabs.pro/wd_my_cloud_support7nh7c.pdfIn PDF document text
    • http://spencermcman.us/3609337774277ewh.pdfIn PDF document text
    • http://jopkapopka.online/dirt_devil_power_stick_sd12530_all_around_full_power_cleaner5e1js.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1628ddcf-e301-416d-9649-d9339b85441b.filesusr.com/ugd/0b1079_a226de0d194b4922804ab595bcfb78b0.pdf?index=trueIn PDF document text
    • https://f98f40d2-b649-4e6b-99af-b89bbf2331ff.filesusr.com/ugd/724bd4_0d570db6bd794f7d8f91805664baeb75.pdf?index=trueIn PDF document text
    • https://da550aaf-34ae-4f9b-ad82-7836b82beebe.filesusr.com/ugd/a203e6_f9529e96e73d42afa4fe037be6ab2b30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/baldor_bench_grinder_operator_s_manual.pdfIn PDF document text
    • https://9169454a-6e45-4b39-89c4-5cd9bf0a6084.filesusr.com/ugd/32fbc8_6b325cffe2de4160b24e08593103cad2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/human_centipede_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/iphone_6_latest_software_update.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/queen_size_fitted_sheet_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/tomiwebinul.pdfIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_18116d8802f34967866e7cfe2985eb65.pdf?index=trueIn PDF document text
    • https://1ceef7f3-d523-4f80-a0a4-3aed54d3d17a.filesusr.com/ugd/48841a_2679301199724579aeb7f061e4cf1631.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BE 4936 bytes
SHA-256: 899b5820b72e12741afba8a21156ea2baf0b40bf21e935faffc4138984b530df
font_01_sfnt_off000109af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109AF 11176 bytes
SHA-256: a127ee3ff432b938f02a26ec92fcf619a5562815d6efb076be596cf893e6294c

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