Malicious PDF — malware analysis report

Static analysis result for SHA-256 60ed77e800a0f0d9…

MALICIOUS

PDF

48.2 KB Created: 2020-10-28 21:58:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b050ef8054f870a36fb53b57bafb35a9 SHA-1: 9924297c300c00e0e69db12df62cf1ff8378f504 SHA-256: 60ed77e800a0f0d93a2d64b3277128378361bdc04007a3f5c382ffd09fbe7bec
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, 'https://ttraff.ru/123?keyword=craftsman+battery+charger+manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into visiting a malicious site under the guise of a manual. The presence of numerous external PDF links, many pointing to benign-looking but potentially SEO-farmed content, further supports a malicious intent to drive traffic to undesirable destinations.

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.ru/123?keyword=craftsman+battery+charger+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369322/normal_5f8bdb7d410c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390081/normal_5f9276c533e40.pdfIn PDF document text
    • https://jinezosibe.weebly.com/uploads/1/3/4/4/134454760/nifadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403273/normal_5f9175ac18a2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407996/normal_5f94cd7e34286.pdfIn PDF document text
    • https://tafopolen.weebly.com/uploads/1/3/4/3/134396822/88613214f6de3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_5f9714797bbc9.pdfIn PDF document text
    • https://saxuvelimeno.weebly.com/uploads/1/3/4/4/134480096/f7a70a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420030/normal_5f98ae5e107ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae73a924-c131-40b4-84db-5eace2e4652e/vibewobatoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/science_revision_worksheets_for_year_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7b6a024-3edf-4ff7-9de0-46721054d810/nefezafajizeturugetuwedaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/370d9c0e-3daf-4273-a3c5-b0ff8ad47e34/8903038741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b977800-7c5f-4019-9fde-726bc59418fe/futhark_a_handbook_of_rune_magic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b900487-e824-43fd-a99f-97fe3c8d854d/tokageruxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f944136-01f5-483e-8e73-7f2071b8051b/16226045653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8320/9373/files/ragawin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63fabd26-eeb1-4b6e-a0f0-ce22bf1cf75d/liar_uncover_the_truth.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4bbe9cc-c910-4c93-88b8-87588c7b9483/zewukitupefuxopimetifubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b298cd7-4cd9-4fc5-8f19-b1322b69537a/33185072803.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_off00007f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F62 5444 bytes
SHA-256: accb883143f1f6fd477c194ee691f70183a7c098f873d9c97340cc0133e62812
font_01_sfnt_off000091c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C3 9920 bytes
SHA-256: 74b2c4e51c1c3a33ee83e5ecd6cc7cc9b7ed96802021d9f142b89d19c1256f1f

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