PDF malware analysis — malicious · de07683ebc624409

MALICIOUS

PDF

41.1 KB Created: 2020-10-27 21:42:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 4dfdf41ffcef0fba42f0527c171e3be6 SHA-1: 717b5a4accead6127211ad9f46fc8191398fe8d7 SHA-256: de07683ebc6244097a7a73b347e1a802b4bbb30d592a05fe1b1fbc130988cf4f

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file functions as a link farm, embedding numerous URLs that lead to external sites. One critical finding is a link to known malicious redirector infrastructure at 'ggtraff.ru'. The document body contains garbled text but includes the string '6013 welding rod sizes', likely a lure to attract clicks. The presence of many links on disposable hosting suggests an attempt to manipulate search engine results or distribute malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://ggtraff.ru/123?keyword=6013+welding+rod+sizes In PDF document text
- https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/2525163.pdfIn PDF document text
- https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/8709022.pdfIn PDF document text
- https://tebefatudu.weebly.com/uploads/1/3/4/3/134329870/afe09a24e8.pdfIn PDF document text
- https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/lazeb.pdfIn PDF document text
- https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/juduvorugatu.pdfIn PDF document text
- https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/ef29ea.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/3725865e-a617-41ab-a158-19650cdc0b83/xugapubigoninuvizovavazi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb0658dc-ca9c-4e85-a90c-17cd58d82b7f/rush_maya_banks_free_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/776033fd-ff91-4aa8-a624-9a53719ec423/64737535323.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/866fe3b4-73ac-4336-9a44-d6ad4669a438/que_es_el_enlace_glucosidico.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2f11580b-036e-40be-af80-9bae8a3165a3/motel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/3505/6030/files/hamilton_beach_coffee_maker_owners_manual.pdfIn PDF document text
- https://s3.amazonaws.com/vinivuxo/rufogibononuliziteduxudus.pdfIn PDF document text
- https://s3.amazonaws.com/kokesatodixon/c._s._lewis_the_lion_the_witch_and_the_wardrobe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3338/5882/files/3968319516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5752/8478/files/sterlingwear_of_boston_store.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3187/8562/files/wufawewaketevezi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/3397/9811/files/skyline_high_school_utah_football_coach.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4805/0583/files/kodak_easyshare_z981_wont_turn_on.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000645e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x645E	5344 bytes
SHA-256: `1cfb03ec190609a4e34445195e8dc1f38576a33df01b8557d4676f8653cd42e9`
`font_01_sfnt_off000076a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76A5	9612 bytes
SHA-256: `ffcabf9e3ac53631e27d2ad284ebbe9307de97d3f9975d677b2e4d913fdaac3d`

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