Malicious PDF — malware analysis report

Static analysis result for SHA-256 564e22a5f83a97c8…

MALICIOUS

PDF

53.7 KB Created: 2020-11-03 23:57:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2cc61f5b1c5c5442d16d75620fb601f5 SHA-1: 2b9564b20013b87b2101748b6812f7842a4f08c8 SHA-256: 564e22a5f83a97c8467fd631da31e49bb1a0abfbc6f94e0c3146f482a4179562
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 0.9999

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://gettraff.ru/strik?keyword=dream+girlfriend+hack+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f922ea184ca2.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/tedisifizunosizure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_5f876323cec75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369915/normal_5f8c4caf66248.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/vodawuwaluz-lekewanexorab-sabelasipi-mubewedalixivug.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/visibalozofebo-diweb-jofepina-lorebig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_5f93e0d92d3dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_5f944e41451a4.pdfIn PDF document text
    • https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/tituxup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f876eae78f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f8712ae890e9.pdfIn 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://uploads.strikinglycdn.com/files/de95d28d-f2eb-44ba-bff2-d241650d9d70/benimuneganis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/510b1893-4342-4e82-8936-e684826b102b/ikanzi_x9_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457eeb5e-9531-4bee-bb42-b4679cb60a8a/kesagezasugujifovapezer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fef53f01-46de-47da-948d-48591148bc2f/88023549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fc65ea-fd73-4f64-833d-3961750d91ed/zajijiviwa.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off00006ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF9 5052 bytes
SHA-256: 5d2cee91375e0bd5dfc7f43e1410c5d302c3a5d4ed20a3fa4188e78720594ed5
font_02_sfnt_off00007fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 10848 bytes
SHA-256: 6d8f34e6587116dd54cd943ceac9b4595298dd68b2e8041e68929269b90ace65
font_03_sfnt_off0000a526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA526 16272 bytes
SHA-256: 4c975c5751d073bbd60a759b5637c12b3f0d2165ec89dd4f9c4a1c39a7d182e3
font_04_sfnt_off0000babc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBABC 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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