Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa950c04fce3bfe2…

MALICIOUS

PDF

34.6 KB Created: 2020-08-10 13:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56d02b2c62b311b0fc609f53e3865dcf SHA-1: 3eae3f2d270958c01f77057a52806c43e0859844 SHA-256: aa950c04fce3bfe28fdd168dfdcb13659a46ec27f3eb2cf84b2f27b9ea630cf6
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. It also exhibits a PDF link farm behavior, with numerous embedded links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for downloading a PDF. The primary malicious URL is https://ttraff.ru/pify?keyword=bhagavad+gita+in+tamil+book+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bhagavad+gita+in+tamil+book+pdf In PDF document text
    • http://files.himleycc.co.uk/uploads/1/3/2/7/132740638/2481082.pdfIn PDF document text
    • http://files.wordoflifealaska.com/uploads/1/3/1/4/131437117/b62aa4143b.pdfIn PDF document text
    • http://files.placentiatheatre.com/uploads/1/3/2/6/132695586/dfaf0.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/1/0431/8131/0101/files/digavudara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1560/1304/files/93409236293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1197/9939/files/imperative_sentence_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/evangelismo_infantil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/kizasafalapetuxemuwemij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/farexajoparuxesoviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/vabilozeralaguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/bourne_identity_soundtracks.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 5

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_off000049b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B4 5492 bytes
SHA-256: 66aa56a1ece62ba82785758e954dc85d51a82a1fa0f6decbc9ae7ac8f1617222
font_01_sfnt_off00005c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C44 9844 bytes
SHA-256: dd86b25929d9d593d19fe64305ffa0c82fda973cc4339cc1e8cb771b62db2c09

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