PDF malware analysis — malicious · dca15095163c558f

MALICIOUS

PDF

61.2 KB Created: 2020-10-25 03:31:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: c035bef808e58e5de8870986412eeabf SHA-1: d2855727d396167ccb3f7386a8ca555c6b889128 SHA-256: dca15095163c558f48a9024e08b52381f9001ae2c90080d5137f87ca3d244c3a

184 Risk Score

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/pify?keyword=korean+folktales+in+hangul+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4367667/normal_5f874a7b77220.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379606/normal_5f8e486341b6b.pdfIn PDF document text
- https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/2328078.pdfIn PDF document text
- https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/titufarojuninu.pdfIn PDF document text
- https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/4811311.pdfIn PDF document text
- https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/99c8160b79397.pdfIn PDF document text
- https://xawuwotogot.weebly.com/uploads/1/3/2/6/132695388/a7516413002985d.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/9a00cc31-bdef-465d-9b5e-cfb9be4b5919/mahfiruze_hatice_sultan.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/46129f47-3265-46f7-81c1-8face07e7fdb/70255850184.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2bde79c7-0bb0-4e68-9b42-b274cd8ae5b2/87589864999.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/769dccae-f580-4ad6-8674-17498887d52a/goriwevujijamumine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/52f74dc2-96e4-43df-b2e3-eafc3f327169/tofeduki.pdfIn PDF document text
- https://s3.amazonaws.com/bajapovogam/75520954317.pdfIn PDF document text
- https://s3.amazonaws.com/zonivezada/plants_as_antimicrobial_agents.pdfIn PDF document text
- https://s3.amazonaws.com/vexeliku/11th_zoology_book_in_tamil_medium_download.pdfIn PDF document text
- https://s3.amazonaws.com/votubukaxogilix/domewezirirupavo.pdfIn PDF document text
- https://s3.amazonaws.com/jezaxojipevu/39205164335.pdfIn PDF document text
- https://s3.amazonaws.com/memul/nata_aptitude_test_sample_papers.pdfIn PDF document text
- https://s3.amazonaws.com/gitipelut/best_app_for_ipad_2018.pdfIn PDF document text
- https://s3.amazonaws.com/vonusirukete/71311502825.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7752/6186/files/reduce_foxit_reader.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0468/0112/5525/files/mofuxaxubegibaki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4654/2229/files/rezosukiposoki.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/8386/5506/files/99229412092.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_off0000a1fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA1FA	4612 bytes
SHA-256: `05b145c623ee705a58affe1029ef4cac44e310e68ac28a2b00892058abe642b2`
`font_01_sfnt_off0000b16f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB16F	5336 bytes
SHA-256: `80b2523f0ec0d56bfcd6d10059c8a9f2bed51f66ee738e805714bb7d9fbb02d2`
`font_02_sfnt_off0000c393.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC393	10328 bytes
SHA-256: `08505b55897e3bf641bcef33182453f7ef9c25205e518e3281ee1e6dda941f3f`

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