Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58d854b5b3d5fec…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 18:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6aff98ccbad0c0f56c2deaa975dca2d6 SHA-1: b1dd243697ed55b0e21cd1deb224db1b6c9dc624 SHA-256: e58d854b5b3d5fec1dac2524329ff46454150777ae3d4f43496addc536550e39
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to known malicious redirector infrastructure (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'botulismo en animales pdf' and the URL itself, suggesting a lure. The presence of a link farm and a critical heuristic firing for a malicious redirector strongly indicates an attempt to lead the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/pify?keyword=botulismo+en+animales+pdf In PDF document text
    • http://rokebof.marcobottone.com/uploads/1/3/1/8/131871390/5494503.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/73109913789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5639/0559/files/93424230325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2847/2220/files/19887040250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/genulerakadufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/giramijuvevimitodakib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7023/4519/files/73960666288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0336/2975/files/48358379067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/aristoteles_y_dante_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/xuvupefotajan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/porsche_owner_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEE 5140 bytes
SHA-256: 70f8b6e03842a2dc200912606439bed2cf8d3c9c9bcf1c2b9dc34d1ec6f23db2
font_01_sfnt_off00007c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5D 10636 bytes
SHA-256: e53b1980d9ea0c293fd8f3fc6019b669351cba70b64941df8c667899080a09e5

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