Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c0193c85331bcd…

MALICIOUS

PDF

44.1 KB Created: 2020-08-22 17:10:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52254f201a1a8c2b0c14348de2579752 SHA-1: b512251f9fd3a3c6dd23509c0cd006eb37404d86 SHA-256: 10c0193c85331bcd3f3278a0c9de7c8ab0fd07ca67cfc6f456ab9cf8b649f93c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body also contains this redirector URL, suggesting an attempt to lure users to a malicious site under the guise of a free download. While no scripts were explicitly extracted, the PDF structure and link farm indicate a malicious intent to redirect users.

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=apple+watch+ios+beta In PDF document text
    • http://files.josepblas.com/uploads/1/3/1/4/131437268/kiwinorubidosa.pdfIn PDF document text
    • http://sixazu.popmetals.com/uploads/1/3/2/8/132816066/ledibomenabatibugi.pdfIn PDF document text
    • http://pomova.kitchenettecuisine.com/uploads/1/3/1/8/131856005/627316.pdfIn PDF document text
    • http://mexebag.neidrya.com/uploads/1/3/1/4/131407057/mitunile-zemij-sutuwagivib-kotenejolufaget.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/1/0432/6309/9040/files/dofewupiwegob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/introduction_to_statistical_relational_learning_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/11197577921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0307/4971/files/51645996008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/16603750050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/el_catecismo_revolucionario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/puvudelebafidosakisifom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4686/2997/files/gunudules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/94596278093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/21307493478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5509/files/zuginerovizijadupuvutixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9564/files/pawujanotizazowinaviw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3462/8516/files/genpact_technical_support_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3672/2588/files/lords_mobile_hero_stages_challenge_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000677a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677A 5148 bytes
SHA-256: deae3778896b1b948cb2c411d568fd4016a4e831a6dc71b3eee3a4b5792cbe8f
font_01_sfnt_off000078fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FE 13292 bytes
SHA-256: 6f4da6a9a24342f342d3c6724f1189e4eb832da151ee56c2843925fec84d7418