Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c6463cd1892395…

MALICIOUS

PDF

64.6 KB Created: 2020-08-07 20:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e2721f6eca5ea3015aa6e6d587d3ed5 SHA-1: 7af7e84bbf7e6b77a214d5dcd72b5c09046df319 SHA-256: 63c6463cd189239599775c1203e0d8119cab60af521db437ec941f2595fcd229
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL, suggesting an attempt to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=kakad+aarti+in+telugu+pdf In PDF document text
    • http://files.mtnspinweave.org/uploads/1/3/1/4/131453592/e68978dbfb6d4.pdfIn PDF document text
    • http://files.shepherdsfortress.org/uploads/1/3/0/7/130775997/4cfa41a37.pdfIn PDF document text
    • http://files.12monthbeauty.com/uploads/1/3/0/8/130874128/6301925.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/1/0435/7803/2296/files/calories_in_different_foods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3476/2655/files/nesirobugololakovise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/cheap_booklet_printing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/likejudunexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/baofeng_uv_5r_manual_greek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8227/9062/files/colossenses_hernandes_dias_lopes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/18901576598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/rafarutekaxigufuxerunit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4292/8790/files/58549231537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/un_livre_pour_apprendre_le_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/gofevos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3027/3434/files/kagomalesul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/pedovesaxupapowonuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6300/0736/files/how_to_read_stock_market_charts.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9093 4836 bytes
SHA-256: 4406626741f7a4d23c6b3a1f7d9129c031a644a2d9567b459935e846e4be08a2
font_01_sfnt_off0000a10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA10C 15772 bytes
SHA-256: 2d7f465c50885347db4cdce66df902fc5fc7f4b98d78cf61694bfbaaf0fcdc66
font_02_sfnt_off0000d1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FD 16132 bytes
SHA-256: 6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028
font_03_sfnt_off0000e6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F4 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176