Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bdc1ab0b7cc4fc8…

MALICIOUS

PDF

43.2 KB Created: 2020-08-09 10:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c0429ec030e2a57319353b75f8cff91 SHA-1: 3b244d3756483c7c538c8e841761962b4cd724d7 SHA-256: 8bdc1ab0b7cc4fc849538d2b9cccff3e44dce86222301f8ca59ee23983ee9605
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.ru/pify?keyword=hands+on+machine+learning+for+algorithmic+trading+free+pdf', is designed to appear as a legitimate download but redirects to unknown infrastructure. This indicates a social engineering tactic to drive traffic to potentially malicious sites.

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=hands+on+machine+learning+for+algorithmic+trading+free+pdf In PDF document text
    • http://dopiwifif.theroombrighouse.co.uk/uploads/1/3/0/8/130813866/foduxasetatixo-jabevisemepased-vegexa-suwifejoberedo.pdfIn PDF document text
    • http://relapo.trivalleysir34.org/uploads/1/3/1/4/131407995/18ad11e90.pdfIn PDF document text
    • http://files.cranewyork.com/uploads/1/3/0/7/130738960/nakivenajamoj_miwaxesimo_rirenebome_revofuvoful.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/osrs_dwarf_multicannon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9341/6349/files/sopedifufovej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/gamavedukozezetuvub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/metotipivulobulajonegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/42950311504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2457/2835/files/razamepupugukojirasapibef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/25229550995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/vexafaviguxaxagatojigip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/social_anarchism_or_lifestyle_anarchism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/15766340682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7836/7897/files/airspace_classes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8822/files/plural_of_prospectus.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A3 5528 bytes
SHA-256: 824f9d38c066734af6022ce4f835d91c296ee0ccaa832e08f67c314d2d72f908
font_01_sfnt_off00007c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4B 10292 bytes
SHA-256: 727fbb26d0f1f9baca88dcef37b5a6d792532b32aacf5e4140ce4927f561825c

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