Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab897b809dd7636…

MALICIOUS

PDF

49.9 KB Created: 2020-08-25 09:38:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74a4b5c4d4371b1fb229f8e3fd549078 SHA-1: 0886485707826f2fcd01d05f31f14f93c40e94a6 SHA-256: 8ab897b809dd763660a59af2caa7d2fbc33d0fee25210822a49145445199d342
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=academic+writing+course+syllabus+pdf'. This indicates an attempt to redirect the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are benign Shopify URLs but include suspicious ones like 'http://jemajuzu.martinhartfilms.com/uploads/1/3/1/6/131606490/8436683.pdf'. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent.

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=academic+writing+course+syllabus+pdf In PDF document text
    • http://jemajuzu.martinhartfilms.com/uploads/1/3/1/6/131606490/8436683.pdfIn PDF document text
    • http://files.chuckboudreau.com/uploads/1/3/2/6/132681443/2761717.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/1/0434/1003/0759/files/church_management_information_system_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8568/4124/files/aaha_kalyanam_songs_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/driver_etc_hosts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8203/9964/files/english_grammar_for_class_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/adobe_audition_for_pc_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3521/3467/files/rigusokexavixoruteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4347/1008/files/jivisena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/98195147618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5017/1554/files/compendium_of_the_catechism_of_the_catholic_church.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000742b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742B 5680 bytes
SHA-256: a531087138a424feb3eca2322201627779dd36f73b28310e6d127811884d6657
font_01_sfnt_off0000876e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876E 10972 bytes
SHA-256: 790b4f8c1d05950ef2dfca154c7078a18d40476390ec0f10355a61e2a26e6750
font_02_sfnt_off0000acb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACB5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.