PDF malware analysis — malicious · 7b460f5cee40df8f

MALICIOUS

PDF

46.7 KB Created: 2020-10-25 00:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 13f2b4d95eff2f84a04fb83c5b3bbef1 SHA-1: 19d9f9019e463a500041ed5d588f92de64a81f96 SHA-256: 7b460f5cee40df8f48012104aa48565b7e4521ca84e92e27960bda676dc0e3bb

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=antonyms+and+synonyms+worksheets+for+grade+3 In PDF document text
- https://cdn-cms.f-static.net/uploads/4393359/normal_5f8ee1d371b30.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384649/normal_5f949accc2074.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378831/normal_5f8b1e625e297.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373504/normal_5f8bc0d88717f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365602/normal_5f8be28872b93.pdfIn PDF document text
- https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/zagep-sewezaj-dubusufix-neguwimaratozad.pdfIn PDF document text
- https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/6434373.pdfIn PDF document text
- https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/2553404.pdfIn PDF document text
- https://tavumake.weebly.com/uploads/1/3/2/7/132740551/binogogavudek.pdfIn PDF document text
- https://loneluripovulom.weebly.com/uploads/1/3/4/3/134364014/2fdd292.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/a94b9bba-fbd9-4659-91f4-d617643609b9/75856898736.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a8536db2-bd05-4d80-9533-87bc729b9f31/godinumoruwomanapiduzas.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8531f632-21f7-4d60-8a84-dd7237eb9e47/88473102467.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/37456688143.pdfIn PDF document text
- https://s3.amazonaws.com/felasorarabipis/alice_miller_hayat_yollar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/3689/6151/files/bedokoga.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/3671/2346/files/48103005811.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/3070/7861/files/cfm56-7b_training_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7831/2625/files/rockman_exe_legend_of_network_apk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0481/3055/6053/files/kingroot_apk_download_version_4.4.2.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/66228163031.pdfIn PDF document text
- https://s3.amazonaws.com/varolexexus/95894981111.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_off000066c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C0	5440 bytes
SHA-256: `a60419e546909720febe618ec8d8701a391958d274641704c40fec2c36f2e53b`
`font_01_sfnt_off0000792f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x792F	11120 bytes
SHA-256: `0b476032c755b654052b4612966047a240754e3c13213e3d9e4c3768129f3151`
`font_02_sfnt_off00009edd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9EDD	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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