Malicious PDF — malware analysis report

Static analysis result for SHA-256 98777710a03c7ca8…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 22:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e29dd27d587ba996b0e7d8543a1b4850 SHA-1: 8840ad267712ff195021b1d262508ed7840db05e SHA-256: 98777710a03c7ca8e85383e5c31f83113f829af23f3e8dde277ecb620656541a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to known malicious redirector infrastructure (ttraff.com). The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, indicating an intent to lure the user to a potentially harmful site. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute 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.com/pify?keyword=continuous+exponential+growth+and+decay+worksheet In PDF document text
    • http://rivuwofop.amandaglathlin.com/uploads/1/3/1/3/131380755/5108185.pdfIn PDF document text
    • http://jesafu.sacredheartyouth.org/uploads/1/3/0/8/130814995/ridofawizatozoz-rupurizenamagi-wosibojezux.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/1/0438/7205/9547/files/kinulame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/wav_to_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/jixirakuvefuvopedupipizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/5339/6647/files/business_proposal_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9983/0952/files/85930342428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/3630356261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/fl_studio_nexus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/33808911524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9320/files/60763973714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/93113739558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/xikaruse.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_off0000514d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x514D 5568 bytes
SHA-256: 70ba5c01eb5fd319784b6e7c82525257dd7900c6d1ad02e31cef2bb3143f1894
font_01_sfnt_off0000644c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 10476 bytes
SHA-256: dbb604625b7a1dff5a2be2574b8c5f93ddf5b581ce4739325bb5dc5cdef3ecdb
font_02_sfnt_off000087e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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