PDF malware analysis — malicious · c9c96d6abd61fdc9

MALICIOUS

PDF

49.4 KB Created: 2020-11-03 21:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 92702fdc8c72970695ff67a6fb5f0638 SHA-1: b5eb275529c1ff7e42146db684c40c2913804f35 SHA-256: c9c96d6abd61fdc9599f4d6455a15543545f53ef60ff763cc393caaa1b10a5e5

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains multiple heuristics indicating malicious redirection and link farming. It embeds a link that redirects to known malicious infrastructure, disguised as a football schedule. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is likely intended to lead the user to a phishing or malware download site.

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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://ttraff.cc/123?keyword=longview+lobos+football+2019+schedule In PDF document text
- https://bukusafirede.weebly.com/uploads/1/3/4/2/134266240/dapinabapifuge.pdfIn PDF document text
- https://galebekamabe.weebly.com/uploads/1/3/4/3/134305591/9ccd4555e73798.pdfIn PDF document text
- https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/talelup.pdfIn PDF document text
- https://bumatiwake.weebly.com/uploads/1/3/4/0/134096698/588806.pdfIn PDF document text
- https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/fewupinav.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/dfe1b5a1-955d-4349-b503-47c92e29a8a1/64242455092.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6ca91223-2b01-4163-ad3c-720fa2a7a7db/99453816185.pdfIn PDF document text
- https://s3.amazonaws.com/kavalukato/66132996540.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ac084729-7dd5-470b-a7f9-551e0ac1da3a/filmora_effects_pack_free_download_m.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/high_school_basketball_drills.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a84adf5c-aaf9-4b3e-8b14-866f64e4ebdd/dobadegitoreku.pdfIn PDF document text
- https://s3.amazonaws.com/jakujakula/ranetujepimafalefodeda.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ab05ada5-acde-4fd6-bc78-a83ae80c088d/wilutezonedem.pdfIn PDF document text
- https://s3.amazonaws.com/dobesogum/silent_weapons_for_quiet_wars_quotes.pdfIn PDF document text
- https://s3.amazonaws.com/bubeto/bandhan_bank_recruitment_application_form.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a83d2451-4c12-444f-9282-571a1dcca8e4/79697921499.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_off00007423.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7423	5784 bytes
SHA-256: `1288419accbaa16db0b66673d97656d5ea64af9bebaa12649503c5f0b9fc6db2`
`font_01_sfnt_off000087e8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87E8	10328 bytes
SHA-256: `44747821435f9dd951db8f8f7dd4a1e7e4f3cce2ad243069a87f30a4d1520c18`
`font_02_sfnt_off0000aa4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA4D	4324 bytes
SHA-256: `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`

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