Malicious PDF — malware analysis report

Static analysis result for SHA-256 0997efd68e9870c0…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 21:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b89e5295f5cefe3ecb6b32ea7d30f8ca SHA-1: b845d14d698d299f39015e811882f83d8dbfa79b SHA-256: 0997efd68e9870c0d36fa309836653933655b2a043579f223749cce65cce52fa
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 redirector URL and benign-looking Shopify links, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

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=bengali+language+movie+songs In PDF document text
    • http://files.eiotown.com/uploads/1/3/0/7/130738614/wivatafi-nidawuvawe-sikunazudipapi.pdfIn PDF document text
    • http://larur.nanotools.us/uploads/1/3/0/7/130739069/ac001a449375fd0.pdfIn PDF document text
    • http://files.asterasresidenceproject.com/uploads/1/3/0/7/130738764/mozemog_dufefarawuwon_fuvurozugigoga.pdfIn PDF document text
    • http://zuror.prestonsweeps.co.uk/uploads/1/3/0/7/130775448/puxuwal.pdfIn PDF document text
    • http://luwak.tartineneworleans.com/uploads/1/3/1/3/131379362/terapi.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/1/0440/5110/3894/files/lipejarutomojarebubidime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/adaptability_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/anet_a8_firmware.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4430/6086/files/convert_epub_to_calibre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/morubeduwidumasuvob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6546/5249/files/63613077627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/55493463897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/55216036675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2215/5930/files/video_converter_ultimate_pour_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3124/8541/files/72848509339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/52319048402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/sajezixow.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6157 5020 bytes
SHA-256: bf8e1bee25769cb126839b00c64809effea8c59dba3df963c30cf162b955b25c
font_01_sfnt_off0000725d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 6236 bytes
SHA-256: bd696e3928d7d52f710aaff6f8fc9a0e2381483f3de8b38e6ed1c16284613f00
font_02_sfnt_off000086ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AC 10064 bytes
SHA-256: 307e9cc4c19a2eda7449e97f00fb70fc4948ec843e53e4cc257f064c8f1009d1