PDF malware analysis — malicious · fa8aa7f3d5988e54

MALICIOUS

PDF

76.6 KB Created: 2020-10-29 03:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: ec46ab73d1b57a1b98f0ec5a1ff47d80 SHA-1: dbd70b628f5fc1bc270d54d8d0bcd9c22cb0ae2d SHA-256: fa8aa7f3d5988e546d0a050796b31c9bd38e977e8dd57fd7bd64cc2aa03582b6

142 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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.
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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.link/123?keyword=retron+5+factory+reset+white+screen In PDF document text
- https://cdn-cms.f-static.net/uploads/4369162/normal_5f8bb70a651c3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404750/normal_5f9578afd55df.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407756/normal_5f99ee684cc9f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378160/normal_5f8cbad44895e.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://s3.amazonaws.com/sazixipame/xiporisetejuvaxerenala.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1b6dd218-ebf0-4f63-92e2-737e99778152/29070772652.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/xamesarixegipuxinubozix.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18ed46fe-ffcb-4ef7-abec-6399fa3fb7e8/7747468423.pdfIn PDF document text
- https://s3.amazonaws.com/zupenafud/gupesosijubabadodivixoduk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9161330b-89ab-4c1e-b8fa-1c9777e4262a/15482168559.pdfIn PDF document text
- https://s3.amazonaws.com/bisute/juwamoxefoxidoj.pdfIn PDF document text
- https://s3.amazonaws.com/zasepo/european_art_history_timeline.pdfIn PDF document text
- https://s3.amazonaws.com/fasanag/1663838111.pdfIn PDF document text
- https://s3.amazonaws.com/fezenur/21568000762.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bda2fd31-3a19-4aae-a528-2830f64708a9/98420301542.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7353d9b8-af93-4227-aa30-3416e8b10bab/51452202154.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/74a564ae-31ab-4338-84df-139341eba343/stacey_lloyd_2015_answer_key_using_colons_and_semicolons.pdfIn PDF document text
- https://s3.amazonaws.com/vazisi/npv_irr_and_payback_period.pdfIn PDF document text
- https://s3.amazonaws.com/kiwopusafize/summit_international_school_of_ministry_scholarship.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/task_centered_approach_in_social_case_work.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e4826fdd-7b3a-4139-9c6d-b241cd483e29/34962710459.pdfIn PDF document text
- https://s3.amazonaws.com/jifesu/jidixokezino.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files/76938427550.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_off0000d68a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD68A	5048 bytes
SHA-256: `31dfc08a6fc8d5b69a5206669dbd295dab65ed1f48eb606c75579dbcd3c21e8f`
`font_01_sfnt_off0000e7c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE7C4	15024 bytes
SHA-256: `e127c1f2e74e531653ee16bce41a795682173af560dab7614aa29360097e9eff`
`font_02_sfnt_off00011635.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11635	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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