PDF malware analysis — malicious · fcbcb3437c4780b1

MALICIOUS

PDF

45.6 KB Created: 2020-10-28 21:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 3bb3dd4f33c771e9d48f0bfdab972389 SHA-1: 12cb58d73b775cbc248b0f9c593a5db9841070d9 SHA-256: fcbcb3437c4780b1da5b6255e1472164c683cbe1d99fb6812a089cfe684f1c91

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 redirector service designed to obscure the final destination. The primary malicious link identified is https://ggtraff.ru/strik?keyword=manual+transmission+synchronizer+problems, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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://ggtraff.ru/strik?keyword=manual+transmission+synchronizer+problems In PDF document text
- https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/rigalado-tekaxobo-mowalelutisenu.pdfIn PDF document text
- https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/jasof.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405420/normal_5f98facd42226.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385422/normal_5f91afaa192f2.pdfIn PDF document text
- https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/5498dacd5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404738/normal_5f93c8c62988a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369775/normal_5f94523b76d4c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380543/normal_5f98deac92511.pdfIn PDF document text
- https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/xelafale.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2281/9233/files/budop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/6780/8190/files/munchkin_anywhere_bottle_warmer_manual.pdfIn PDF document text
- https://s3.amazonaws.com/pexodugosa/present_continuous_affirmative_negative_interrogative.pdfIn PDF document text
- https://s3.amazonaws.com/pazovugal/uber_in_rome_illegal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2384/3996/files/leading_at_a_higher_level_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8996/9820/files/zigojurimurunirixekera.pdfIn PDF document text
- https://s3.amazonaws.com/tadovu/lizuzu.pdfIn PDF document text
- https://s3.amazonaws.com/memul/college_application_essay_examples.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/3826/8318/files/45372161250.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3071/5288/files/zewivuwaxedozan.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/9929/4363/files/zejajeg.pdfIn PDF document text
- https://s3.amazonaws.com/jewizopukuni/cosumnes_river_college_counseling.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7877/9047/files/inequality_questions_for_bank_exams.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5797/1354/files/55914739678.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1030/9787/files/wodawepidefidi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/5547/5607/files/thinking_maps_templates.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7877/9047/files/likitawalom.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_off00007360.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7360	5468 bytes
SHA-256: `5c657b3f945406b79746fe3bddc368d6ba40288f90952da39b8139220ccccfa6`
`font_01_sfnt_off000085e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85E7	10124 bytes
SHA-256: `a60193f295769dedb5b6e45c7411768e6e958c5b8c609b96470c7763e8f4dc7d`

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