Malicious PDF — malware analysis report

Static analysis result for SHA-256 7031f89cdca4700d…

MALICIOUS

PDF

84.4 KB Created: 2020-11-22 11:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2b36d48df46c0247280483f5ad780cc0 SHA-1: 9d5cfd16e0601025706696b9d6580d0d3e347b39 SHA-256: 7031f89cdca4700dcf0807d7f1c535ba1c95c9ef08428c114936b03fc0b94271
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics, including a high-confidence ML classifier and ClamAV detection. It contains an external URI pointing to 'trafffi.ru', suggesting a phishing or malicious redirection attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs indicate it's designed to lead the user to a malicious resource, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffi.ru/123?utm_term=eurotherm+590+analog+dc+drive+manual PDF link annotation
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/6310841.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/ripuxozidajalixovon.pdfIn PDF document text
    • https://vuvofazomegudej.weebly.com/uploads/1/3/4/3/134329778/2470435.pdfIn PDF document text
    • https://dejutuzalusabi.weebly.com/uploads/1/3/4/8/134869317/leburuzawuvik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/manapidalelununexiwox.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/rifimize.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/92034590668.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22204b45-9df0-4162-a283-6e8576fa807f/56367422221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035c9fa8-b3fe-4bb7-9da9-2cf17bc318f8/cocktail_waitress_dress_uniforms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0249dfea-acb9-431d-b9e5-f80053713493/76584648408.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/html_div_to_jquery.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/nycha_annual_recertification_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/68037804328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb16415-46c9-4bb1-ab68-f0fb0366eb61/cat_in_the_hat_christmas_coloring_pages.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/jivezileboberinokimaduzib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ff0b2e-05d4-4770-8ebd-d8b0b377f217/gurosasiwonekowi.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://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2E 5616 bytes
SHA-256: 84878e8c1077b399bcf268bb5b91532d5b4380a3a1110015d990031288f4a527
font_01_sfnt_off0001022d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022D 9148 bytes
SHA-256: 94d2743e31da0f1da320b0684a1035e5ce0f05cedb4c96fceb0cbf9fd81f6b17
font_02_sfnt_off00011485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11485 14936 bytes
SHA-256: d80ae72ec1950893df869b8cd7ec11647d0c8c6af6a7684fec4248d4c9bdc5b6

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