PDF malware analysis — malicious · f72139c70afdf66f

MALICIOUS

PDF

47.4 KB Created: 2020-10-28 22:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: e6f9543522f3a426ef58ce7fb401f3b2 SHA-1: e771dc8457d7229d01194f43bfc19361bc5ea301 SHA-256: f72139c70afdf66f66a546ff7abb50f83f868602a7a832d287aeb83941fd8f3b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm or redirector infrastructure. The primary malicious URL identified is https://gettraff.ru/aws?keyword=chromatin+condenses+into+chromosomes+and+spindles+begin+to+form, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and appears to be designed to trick users into clicking these links, likely leading to further malicious content or phishing attempts.

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/aws?keyword=chromatin+condenses+into+chromosomes+and+spindles+begin+to+form In PDF document text
- https://cdn-cms.f-static.net/uploads/4367923/normal_5f8b7899be04d.pdfIn PDF document text
- https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/jegojes.pdfIn PDF document text
- https://wonidajubiput.weebly.com/uploads/1/3/4/0/134017859/gumodadob.pdfIn PDF document text
- https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/9d7e87.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367275/normal_5f8d052dd31e8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371536/normal_5f8916db721b5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378386/normal_5f8fbc35a904c.pdfIn PDF document text
- https://xebivonejawaf.weebly.com/uploads/1/3/4/0/134096192/pibomu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387218/normal_5f95f0c42f015.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/457dc365-a03c-407e-9a17-d287b42ada3b/costco_frozen_pizza_cooking_instructions.pdfIn PDF document text
- https://s3.amazonaws.com/gupuso/statistical_learning_and_data_science.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/50b84830-369d-4a23-9300-95c676c35da6/organic_chemistry_solomons_11th_edition_study_guide.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/atlas_of_human_anatomy_for_the_artist.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83ceab70-ece1-47b8-b1c2-bb6851bc6bd8/doreguvezeborumujutodiwim.pdfIn PDF document text
- https://s3.amazonaws.com/fojaxexino/knee_surgery_sports_traumatology_arthroscopy.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/008d10c8-e55e-48e1-afa5-a4c2cc483eee/gestime_aphp_fr_planning.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fb7d6940-f729-4841-8a83-1a9b4ec32e7b/xalot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/24648445-90a2-4f22-8c8e-ec4409cc06e2/lawitofakes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/430d1e85-d9a6-4d9f-82ae-2e400f03b5a3/36111990215.pdfIn PDF document text
- https://s3.amazonaws.com/toliwudalamem/48064450530.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3754e972-7f1c-4695-bced-67d6bf91eaf6/junonegofuwetotexumeb.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_off00006b09.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B09	5520 bytes
SHA-256: `9a070e5bf9d9d5fa7b26794155456687422ab72c923fa2133e6a1efbc83252a4`
`font_01_sfnt_off00007d9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D9E	10480 bytes
SHA-256: `10f8987d8f98186a02fa7f172437022ae8b9125e8a7709347da2d227d39e2472`
`font_02_sfnt_off0000a152.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA152	4324 bytes
SHA-256: `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`

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