Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b4df3584356426…

MALICIOUS

PDF

41.1 KB Created: 2020-08-02 22:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fcf92de402ac241633c6396d023674dc SHA-1: 2834ca792a8655c55992542f427ac541590348d3 SHA-256: e8b4df3584356426184f9ea5351f43023dd3387e1c846f9de6b5dd07b847ef53
194 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one pointing to a known malicious redirector at `https://ttraff.ru/pify?keyword=bobcat+sweeper+manual+pdf`. The document body text, though heavily obfuscated, appears to be a lure related to a "bobcat sweeper manual pdf". The presence of a large number of external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites. No scripts were extracted from this sample.

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.ru/pify?keyword=bobcat+sweeper+manual+pdf In PDF document text
    • http://files.pastorsteveyork.org/uploads/1/3/2/6/132696304/xonevotakiv-bolobavofujaf-wavaki.pdfIn PDF document text
    • http://files.triadmanagementrealty.com/uploads/1/3/1/4/131409884/bezogakibugafepes.pdfIn PDF document text
    • http://files.webloom.org/uploads/1/3/0/7/130776489/bibipawomelu.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/1/0428/8207/2739/files/webisigoxakosenag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0663/files/morozevivezuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/71742133141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9414/5176/files/35767017490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/49240289469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/tejej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/wivubukonudax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1104/6561/files/jomojop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/94021901156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/68561305536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/jatimebozudaboxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1839/4523/files/bamudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/seboxanova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/binagavat.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 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAB 5580 bytes
SHA-256: 813ef1fd8252002349ecd94ca1ad7965f909db8ece169820c9e01e0886279721
font_01_sfnt_off0000719b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719B 11912 bytes
SHA-256: 2971f250052fff681661e65ce64b645730af1768eebed5cd7198963824738cd4

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