Malicious PDF — malware analysis report

Static analysis result for SHA-256 445fccdde90cbae3…

MALICIOUS

PDF

49.4 KB Created: 2020-07-31 15:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 938a70b05d29e30cd921a152e45db702 SHA-1: 8879a525bc8bcb135dbcb14848787728b3bc8126 SHA-256: 445fccdde90cbae35eb6fcd2d814cee71b6cd0c307549cbc3bb09695d93e9ac0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.cc. This suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, and the document body was heavily obfuscated.

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=string+to+byte+array In PDF document text
    • http://files.thewrightograph.com/uploads/1/3/1/8/131856318/ginotorew-dujadutob.pdfIn PDF document text
    • http://files.gordoncobbphd.com/uploads/1/3/0/9/130969242/7040740.pdfIn PDF document text
    • http://files.kimberlyrogers.net/uploads/1/3/0/9/130969399/6373983.pdfIn PDF document text
    • http://files.massagebymariri.com/uploads/1/3/2/6/132681665/wurijimugo_takoxupesixoje.pdfIn PDF document text
    • http://files.romainewashington.com/uploads/1/3/1/8/131857193/ropodefi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0893/3540/files/45661699432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/9235601961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7024/9374/files/66795072602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/59114985826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/83488404205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/2761186273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/bumoletolefinubabutosuxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/21519330701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8170/files/kijejuvawitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/mezigixijilubexinitagubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7912/files/62347723177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/wemukoxarabizodudumezaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6946/3959/files/pukasisibamogodonuzoxedes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7141/4173/files/83730283661.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7830 4776 bytes
SHA-256: dba494d5c5c266d6fedd77cdd59643fbd04c3468b732ebb2e980157286a18f90
font_01_sfnt_off00008873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8873 2336 bytes
SHA-256: f1a4f58ecb7e09c31ab7788b06181a0382f34cd2ed5361e8fcd6099c201cd86c
font_02_sfnt_off000092bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BB 11188 bytes
SHA-256: 67bcdf635e79c49c4e611ccb95b8716dce46331a98ad34e4f679e6e19423f841