PDF malware analysis — malicious · 68bc0ddeea1b6862

MALICIOUS

PDF

55.1 KB Created: 2020-10-15 23:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 6620f9415c9e6c38bead3de8410c88cc SHA-1: e8806118bd2ec0ccd3f1dfa9f08394808ab782fc SHA-256: 68bc0ddeea1b6862955f9955512a6b4655d9c884c7f2249058f49500a1fe92c5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://gettraff.ru/123?keyword=mount+and+blade+warband+starting+kingdom+guide. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which are benign but likely serve to obscure the malicious intent. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest an attempt to lure users to malicious sites, potentially for phishing or malware distribution.

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://gettraff.ru/123?keyword=mount+and+blade+warband+starting+kingdom+guide In PDF document text
- https://cdn-cms.f-static.net/uploads/4365575/normal_5f86f4001a788.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365541/normal_5f87dd8da8452.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365608/normal_5f870971eaed9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365586/normal_5f889bd3a3afb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369146/normal_5f880442b494c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366008/normal_5f8710cd257e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365575/normal_5f876a36b0781.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367019/normal_5f8755ca3187e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369648/normal_5f88a1033e2b6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369657/normal_5f883e2a0dbf8.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://cdn.shopify.com/s/files/1/0485/7040/0928/files/lawn_tractor_trailer_dolly.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/1203/7540/files/tavolasobaroberufoniboso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0488/9821/1999/files/geometry_final_exam_review_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/079f7153-9f43-4028-b4f6-05aaea5dc33a/zemitaduwodom.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3369ef98-b8ed-4f6e-802a-908de0d54788/migutopamurelowu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4499/3181/files/kettenkrad_for_sale_uk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/8724/8538/files/chistes_malos_capitan_america.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fff5a552-d224-401c-bd75-951aac23db94/jowosuragediraxasojukug.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5620e000-490d-4afb-ba63-f7cb5ee8ecd8/58672861187.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3c2e27fa-e77e-4a2d-ac0a-a55b06b53351/sabukubudiwo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c0e138dd-da73-481c-98ba-f7de2b7b8c9c/34795600433.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/877d09fd-a511-45d2-9a05-b6b752cc3590/zetoxuxazijevodepusamo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008bb7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BB7	5328 bytes
SHA-256: `42d55f9241f5d26b68b5a4c1702f8de34e25488fb453a135b1b1ff2f5898dd1a`
`font_01_sfnt_off00009dd6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9DD6	10120 bytes
SHA-256: `4d88d3cc87f3554f6e6312334851f0c9f1d8e400486e36e3b554eb875dda19d4`
`font_02_sfnt_off0000c05e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC05E	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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