Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f63c26b7ca4a3ae…

MALICIOUS

PDF

48.0 KB Created: 2020-08-07 04:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9df7afa1239a3f06fa217feca895b9f3 SHA-1: 265b52ac7e5f2befa50465090efe380b414081a9 SHA-256: 1f63c26b7ca4a3aea79a3200028f8a24fd6436f5bae58692341e2bd21b00b3d2
194 Risk Score

Malware Insights

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

The PDF contains a malicious link disguised as a document about Android secret codes. This link redirects to a known malicious domain, ttraff.com, which is likely used to host further stages of an attack. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various external resources, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=android+secret+code+list+pdf In PDF document text
    • http://files.abcoindustrialsales.com/uploads/1/3/0/9/130970008/lezep.pdfIn PDF document text
    • http://ludutifo.theridgevillebakery.com/uploads/1/3/0/7/130776177/f57f0.pdfIn PDF document text
    • http://files.yogablackpool.com/uploads/1/3/1/8/131871535/kuposi-kalege.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/1/0429/1444/7519/files/61103725431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1791/8875/files/list_of_compound_words_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/al_ghazali_le_livre_de_l_amour.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/vureneworur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/30270101289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5732/3925/files/lumebivedojujapixov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/morodapemeluvedajuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/68496843208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3143/6186/files/30767584719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6374/files/53195117417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/hawaii_driver_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/60615598115.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 4928 bytes
SHA-256: b396c5fec2bbecc9d2b38a3ca4ebdf9db201a6f25549372049b897ce115775eb
font_01_sfnt_off000070dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 14588 bytes
SHA-256: c467061c47069063ba486ec3b8847e45595987bbe0a1c5f3b691744cfa0b734d
font_02_sfnt_off00009e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2A 16060 bytes
SHA-256: d8a1a34de14a7b8fce5e51635835121d353d188f9ac9ce1e11538509fd4c5cdc