PDF malware analysis — malicious · 31dcc789110a2d19

MALICIOUS

PDF

49.1 KB Created: 2020-10-23 05:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: ecc7088c024cd3723bfc8a9295381953 SHA-1: 742c3e8c63feedd8209589a1c055461a956755d1 SHA-256: 31dcc789110a2d1953c03f388fd186e7594a211656d6c2d802ca56e643329a81

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://gettraff.ru/123?keyword=octavia+e+butler+bloodchild+pdf In PDF document text
- https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/mukobuf.pdfIn PDF document text
- https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/2957024.pdfIn PDF document text
- https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/56c4ea5f1137.pdfIn PDF document text
- https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
- https://siregudak.weebly.com/uploads/1/3/0/7/130738759/8709957.pdfIn PDF document text
- https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8625127.pdfIn PDF document text
- https://zuvagenujak.weebly.com/uploads/1/3/4/4/134454716/5626904.pdfIn PDF document text
- https://mivoxoxez.weebly.com/uploads/1/3/4/3/134340481/4943789.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/e2bf2b38-961b-4260-89fb-30c3e7ef5bdb/sokowizemisimadojevi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bbe37807-1b63-4d19-b6ea-8d7110a05186/79119113977.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cf94c9d0-ca5b-4f6c-bf61-89f36db581ef/pes_2019_controls_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e755449-abf6-45ef-81c6-a78c21c58569/xejukoduwobej.pdfIn PDF document text
- https://s3.amazonaws.com/sepawi/virisezimumonomoga.pdfIn PDF document text
- https://s3.amazonaws.com/gixawetopoli/79645839601.pdfIn PDF document text
- https://s3.amazonaws.com/numegubowalonan/ziwubuxokawikoruwitinoti.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f76d709a-7292-4078-8de8-a9ea68b2572e/peel_remote_app_download.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8463f662-b43e-4c4c-8aa4-80f8b361da41/36278186293.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f31c0b53-6cd1-45ba-b6e6-d1c5cbe0e35a/rodukufefofurerajoviwuloj.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e2f2e8b7-debc-4ddb-bef7-e428393159cb/suvirituxitisomenozinogeb.pdfIn PDF document text
- https://s3.amazonaws.com/ditiruz/chilled_water_air_conditioning_system.pdfIn PDF document text
- https://s3.amazonaws.com/lixasifasi/brick_wall_bond_types.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006ae0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AE0	5292 bytes
SHA-256: `a5802e24e0d977c18efad86c218179b83cf23d3ec1c3f6eca59278c6731e66a1`
`font_01_sfnt_off00007cd3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CD3	10548 bytes
SHA-256: `0cdcbada3035d22bc358d8b06ff39ca0732576ccb7f28c2579d054fea84bc2c9`
`font_02_sfnt_off0000a01d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA01D	16192 bytes
SHA-256: `1ff76b967cdf3bc4238cb8097aa9d4755c8fb5bd66c4cf01391f6e70ad1e9315`

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