Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b075193421dc1fe…

MALICIOUS

PDF

51.3 KB Created: 2020-08-12 07:34:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5df41f75a9ff328e1dc9cbe2e5098b50 SHA-1: 2915e74601051a1c165479cf25d5253bd86c342c SHA-256: 0b075193421dc1fea438c9ed1f1be991a2be9f48a6cdb201961c1bacdb159632
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to redirector infrastructure, indicating a link farm or phishing attempt. The primary redirector URL is https://ttraff.cc/pify?keyword=group+isomorphism+theorems+pdf, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to drive traffic to malicious sites under the guise of providing PDF documents.

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/pify?keyword=group+isomorphism+theorems+pdf In PDF document text
    • http://files.stdavidandstmair.co.uk/uploads/1/3/0/7/130776081/jowelexe.pdfIn PDF document text
    • http://mufuzudil.martinespada.net/uploads/1/3/1/4/131437987/jirebosaxixum.pdfIn PDF document text
    • http://files.myvirtualvacations.net/uploads/1/3/0/7/130775971/c907b.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/1/0427/5604/7004/files/wefusasurarukusopuralin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5679/0678/files/99825656146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/mumeviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/hunger_games_3_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/gaketujegez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/vapufavito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4704/0662/files/brahmastra_by_ajay_gulati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/51750498305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/66245891013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4344/files/panuxomisiwadil.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: myvirtualvacations.net 3 samples

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_off00006ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB4 5068 bytes
SHA-256: 961bf71a76e5fc1a8a438615eecc9f7421de1c132f0c79ce8e5d3993fc79dde3
font_01_sfnt_off00007bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD4 14200 bytes
SHA-256: 2139fc72b2606828cdf41f0ad5d8dc98d451955cb07b85c3ea31979dd258b930
font_02_sfnt_off0000a8a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A5 16752 bytes
SHA-256: a4daabf6f72445e084830ccd59f1b0bc33e600347117e6b298cfdc0fe47d7030

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