Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c0093626f141ab…

MALICIOUS

PDF

72.0 KB Created: 2021-01-02 11:52:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2de653b425bb6c6b9dc1b70abeab89a3 SHA-1: 89651520eed44ca3a1614c2fd4e6c2e71482d9cf SHA-256: 20c0093626f141ab87e64fec2720ae2c029973708c64eddce57bd313a17ca72f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://traffmen.ru/aws?utm_term=my+appearance+worksheet In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tobobowu/barmac_crusher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c97a102-c128-440d-8a49-14b99aff1d33/xitepoxetog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c110a5-0cfa-450a-9f6a-b00d5367124d/goku_super_saiyan_battle_of_gods.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/79407573986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08b5fa0d-80d5-4d20-96ca-1f34c962a7c5/the_unhappy_marriage_of_marxism_and_feminism_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/decd5412-4b64-4fc7-bba3-c2b851bb1395/rascal_flatts_me_and_my_gang.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de6778c8-4b09-44ee-9299-6a32eb019261/l_blend_words_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/59228256685.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/wopixu.pdfIn PDF document text
    • https://s3.amazonaws.com/mewezekilafef/1995_polaris_magnum_425_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6f41ce-f1c7-4c37-8027-9f0167b085c6/jifibiworonum.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD145 4992 bytes
SHA-256: e399a56e87052c25dec3204b92d6580486851f46f4394465b02f206fda9b736b
font_01_sfnt_off0000e240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE240 10360 bytes
SHA-256: 4b2d7d2f551cadfb6944bb6fadfa1d59b2163b6431afe4e9ec2080d5b11bd2aa
font_02_sfnt_off000105bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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