Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cbe4f31fad4474d…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 00:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: afc21e78556ed84c2ba0388df0d9f479 SHA-1: 78b2aef6aaceb3f9f0d812c67d9494af2414ff65 SHA-256: 7cbe4f31fad4474d7a78133abf3e9e6358e130a85fabd67da3e3dbf0f8c4bd6f
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to a redirector service, suggesting an attempt to manipulate search engine results or distribute further malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=vagabat+gita+bengali+pdf+download. While no scripts were directly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful 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=vagabat+gita+bengali+pdf+download In PDF document text
    • http://lezufu.silkwoodart.com/uploads/1/3/0/8/130874330/4001752.pdfIn PDF document text
    • http://janitaj.bridlewiseridingacademy.com/uploads/1/3/0/7/130775195/7e65e0e5a7.pdfIn PDF document text
    • http://zezos.trireflextherapy.com/uploads/1/3/0/7/130776485/litakupag.pdfIn PDF document text
    • http://files.yorktown164.org/uploads/1/3/2/7/132740693/41f77c795.pdfIn PDF document text
    • http://files.thedimensionart.com/uploads/1/3/1/4/131437531/runozagibivexewuje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/62203433158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2744/6435/files/dobowoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7099/7151/files/30341777154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/46re_transmission_rebuild_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/air_pollution_causes_and_remedies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0361/6165/files/poxoxoloperenute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/5576/9758/files/atomistica_feltre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/riniguxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/buxitonokovid.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D9A 5132 bytes
SHA-256: b8a731f1f708b4b479611a1b08f5e62f1a123eee2cbda72dc72505215f401010
font_01_sfnt_off00005f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F31 8680 bytes
SHA-256: e036eb76c4e813fc65d56090d230d492a24ef2c3ffa20679c67eae893e4dc4c5
font_02_sfnt_off00007770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7770 9848 bytes
SHA-256: 40179f56bb5b663a9b1c8b94704510ae4725b6eba4d2a3bb435f42b26d6119a7
font_03_sfnt_off00009955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9955 3480 bytes
SHA-256: a2e640f93cc36f810acfa2b233528f053f32bf2619bf05d19763e230926b9089