Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec16927737a5c5d6…

MALICIOUS

PDF

43.2 KB Created: 2020-08-08 02:26:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 138b4b0419b8170d76d38917360e7025 SHA-1: 74a99e6cdc26bd461f8b9d5c7f9613b4aaca82ce SHA-256: ec16927737a5c5d6bf268630770b3c83ebb582be8f5b68a18bbb85e44969701e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body and embedded links suggest a lure related to 'Logic Pro X PDF italiano', likely to trick users into downloading further malicious content or visiting phishing sites.

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/wb?keyword=logic%20pro%20x%20pdf%20italiano
    • http://files.insta-answer.com/uploads/1/3/1/4/131437873/bivimotikodixik-garovadaka.pdf
    • http://files.cassondramoriarty.com/uploads/1/3/0/8/130813834/7110434f5ed0.pdf
    • http://files.employeetimeclocks.net/uploads/1/3/2/6/132681066/belogisob-xekod-nodepife.pdf
    • http://files.welsthailand.com/uploads/1/3/0/7/130775652/patakolo.pdf
    • http://files.g99photography.co.uk/uploads/1/3/0/8/130813985/tinorazoxuji.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/bokewalonan.pdf
    • https://cdn.shopify.com/s/files/1/0435/4631/2863/files/fuputabesiwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/statics_hibbeler_14th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0431/9916/8673/files/12068508046.pdf
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/liwame.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/15578766322.pdf
    • https://cdn.shopify.com/s/files/1/0435/3681/0135/files/begufimikufawefap.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/samosewes.pdf
    • https://cdn.shopify.com/s/files/1/0441/1519/8104/files/english_grammar_rules_chart.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/40733118289.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7619/files/linovajiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.pdf
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/98006587451.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000614f.bin
967e169b76ab27b6326c0bbca2822383fdeb32a6b41dd22443611e537fe7231a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 5152 bytes
font_01_sfnt_off000072fb.bin
248b6b56458bfb31b9204536eea99f57b41f5e06e7fdf53f29c9ead460bf149f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72FB 14568 bytes

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