Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a179b9eeb05f0e…

MALICIOUS

PDF

89.1 KB Created: 2020-12-20 09:06:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 60748add208fc83d3f50462b37875472 SHA-1: 1654c575df199536a7db9303c57ef3775118cc79 SHA-256: f5a179b9eeb05f0e8f75d6975473ad92d189f4bd637b3286b9ccf649ba7ca91b
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, likely intended to manipulate search engine results or redirect users to malicious content. While no scripts were directly extracted, the presence of numerous external links suggests a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/strik?utm_term=josef+albers+interaction+of+color+pdf+espa%25C3%25B1ol In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403118/normal_5fa51b9c95a89.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/2548198.pdfIn PDF document text
    • https://werotibumef.weebly.com/uploads/1/3/4/9/134900185/0a48f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5fafd58734f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368492/normal_5f905585f2ed5.pdfIn PDF document text
    • https://newogofifexepe.weebly.com/uploads/1/3/4/8/134884114/8658853.pdfIn PDF document text
    • https://lonuxomefuju.weebly.com/uploads/1/3/4/8/134871759/gomemetosisol.pdfIn PDF document text
    • https://nogigeto.weebly.com/uploads/1/3/4/6/134665346/mufabaruzetalafor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2816b0a2757459bed19f0/t/5fc461ca61e25426e1c444a4/1606705610857/bioprocess_engineering_basic_concepts_3rd_edition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fe012e537a05ef0995e2/t/5fc593396457125654fb834b/1606783801490/zinirapujovipiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd5508eb685147a09c9c9e/t/5fdd7a9e463d3b6c6f2072bb/1608350367339/flannelette_bassinet_sheets_baby_bunting.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a04f02915d4a16f99096/t/5fc9375d36a13c1fdd59ef16/1607022429833/72665482821.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf3367affad1251da8abe8/t/5fd16659d97b572b89cd3d7a/1607558746313/you_are_hope_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde8bd64ad8390d8b778f30/t/5fdec3da7f4e6a336729e232/1608434651114/21067015196.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc662fb3dfdd95b60faa0a4/t/5fc9554f3825126da63d1a4c/1607030095685/jofemekavusukelux.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_off00010486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10486 5492 bytes
SHA-256: 281c7c14bc019150b1f9783f697c466fab87bf5349371c562b658d4b268e406f
font_01_sfnt_off000116f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F9 12104 bytes
SHA-256: 021ebf1f838db71b03f9917b9f2b1f321b38fa829cdbe259aeb3fdd5c248998a
font_02_sfnt_off00013f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F82 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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