Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f54e9dd38995802…

MALICIOUS

PDF

59.8 KB Created: 2020-08-07 20:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dfa994d426a23dd0ad5296091e295ab SHA-1: 1a273957042276ef21f128520533345eb576e904 SHA-256: 8f54e9dd389958024dc7746df9f0c9933108d0605c27984cbc2031bcbd4b9ab4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of many Shopify links suggests a link farm used to boost search engine rankings for 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=addition+and+subtraction+fractions+worksheets+pdf In PDF document text
    • http://files.castleextermination.com/uploads/1/3/1/3/131382330/47dc0cbc423.pdfIn PDF document text
    • http://files.gcsebusiness.com/uploads/1/3/0/8/130874352/2454969.pdfIn PDF document text
    • http://parafur.elephantsinthecoffee.com/uploads/1/3/1/8/131856698/zeliroxupikigigotag.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/1/0430/3316/5986/files/38669671632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/45187781005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/accountant_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/44248428101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/scholarship_affidavit_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/suwelagukokemofidoxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7708/0990/files/oxford_picture_dictionary_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/keraxelegexidogijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/62370753513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8671/6830/files/bus_topology_advantages_and_disadvantages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3332/0872/files/90710255567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3798/0834/files/bonovomigozube.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_off00008a82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A82 5380 bytes
SHA-256: 0bf8163f90b03aa42770176170b7f1b5ed176a5696aa4030f71d437aa6056467
font_01_sfnt_off00009ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CCF 9712 bytes
SHA-256: 0368240da0b71a88d89960aceaa4e8ab8b496c4960795b3063fd4fb2b9918407
font_02_sfnt_off0000be50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE50 16116 bytes
SHA-256: 64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df
font_03_sfnt_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c