Malicious PDF — malware analysis report

Static analysis result for SHA-256 8627885641cfaaeb…

MALICIOUS

PDF

36.5 KB Created: 2020-08-16 23:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfc7a622b6d6291031f47527c1d76bed SHA-1: 4d2dd1d5e406824e57b17f5fe50f651d046e6660 SHA-256: 8627885641cfaaeb95ad432365edde996dc6ecf00053faf09c695811f09565e5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to redirector domains designed to obscure the final malicious destination. The primary redirector URL, https://ttraff.ru/pify?keyword=patola+bohemia+song++mp4, is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise malicious content as search results or download links.

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.ru/pify?keyword=patola+bohemia+song++mp4 In PDF document text
    • http://files.rxalens.net/uploads/1/3/2/6/132696145/furojexuz.pdfIn PDF document text
    • http://files.msmossislit.com/uploads/1/3/0/8/130814205/6223211.pdfIn PDF document text
    • http://zonidu.rickysaputrayoga.com/uploads/1/3/1/1/131164239/3965085.pdfIn PDF document text
    • http://files.thesaltbarmacclesfield.com/uploads/1/3/1/3/131381288/1935105.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://cdn.shopify.com/s/files/1/0432/2469/4942/files/vojigamovegozetapesuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/class_d_audio_amplifier_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4279/8757/files/95490474325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/52127885763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9506/8565/files/a_christmas_alleluia_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4455/files/java_spring_4_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2583/1835/files/jemow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/1092321220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/pobapizuwuseximupudedosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9762/files/tumopiligovexupavufowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/wuwimedojawibegajuluzix.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44B8 5152 bytes
SHA-256: ddfab6c8a656c2590d53e7be5fc8333585189823efd3c7cf0da2967423bc7f16
font_01_sfnt_off00005614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5614 9592 bytes
SHA-256: 95768b2e8acd5a0d0c80a777a5d1c958fd7ef7202495ff12c53b0159237924fb
font_02_sfnt_off000076fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76FA 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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