Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8b7314fbb86e887…

MALICIOUS

PDF

41.5 KB Created: 2020-08-21 00:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e23bf616be2e736096a85f2fa5fb8c8a SHA-1: 55a3b238afae014f1ecb637b4af614b32321fc41 SHA-256: c8b7314fbb86e887e4ae36d1d89cb14492b275bf9ecb36da80c67b718d8254e4
194 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 'https://ttraff.cc/pify?keyword=falaknuma+das+arerey+manasa+video+song'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which point to Shopify domains. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the embedded links are the primary mechanism for directing users to malicious content.

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=falaknuma+das+arerey+manasa+video+song In PDF document text
    • http://files.vanndukeandsammygotjokes.com/uploads/1/3/2/3/132303013/9763178.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3119/1975/files/16962664785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6610/5759/files/ios_font_sizes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/17137257979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/85887391816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6998/7221/files/2_digit_subtraction_with_regrouping.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/92683991023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/16642344403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/26647792278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3908/files/fasijewopozenonore.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000571b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571B 5128 bytes
SHA-256: 2c5d1ab91bf316b1634ff280806b3a2d5c14fca6e81a448766dbc191fc4d1232
font_01_sfnt_off00006878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6878 10244 bytes
SHA-256: 0215fbb68c295d817501a0a3ea2636638bbd99488fc39d21c6e7081a9acc72aa
font_02_sfnt_off00008b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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