Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa056c32307628d…

MALICIOUS

PDF

57.7 KB Created: 2020-08-09 19:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 999206034fb3de7630e8574c084117d0 SHA-1: fee88ecf241411df30748cd17314b6b0d571dbb9 SHA-256: 6fa056c32307628d8bcb36cbe98c4220d664aced8d0d8c72e515d563f8b90784
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, many pointing to a redirector infrastructure designed to obscure the true destination. The primary redirector URL is https://ttraff.ru/pify?keyword=practical+boiler+water+treatment+handbook+pdf+download, which is flagged as malicious. This indicates a likely attempt to lure users to malicious content or phishing pages under the guise of providing a document download. No scripts were extracted, but the structure suggests a phishing or malware distribution lure.

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=practical+boiler+water+treatment+handbook+pdf+download In PDF document text
    • http://files.schoolslastudentsdeserve.com/uploads/1/3/1/1/131163738/598208.pdfIn PDF document text
    • http://files.ocalawestumc.com/uploads/1/3/0/7/130738875/9300164.pdfIn PDF document text
    • http://files.montreuxatfc.com/uploads/1/3/2/6/132681698/6c94437a6a26afe.pdfIn PDF document text
    • http://files.daisymaeboutiqueshop.com/uploads/1/3/0/7/130739268/4360403.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/1/0435/6797/2515/files/68526374933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/jibizoxafezise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/rfid_based_attendance_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/11347636770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/stick_wars_1_hacked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/49083676525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2744/5413/files/texalomudomirulapoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/fivilobekififeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7831/0295/files/jenonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/capillary_refill_time_adalah.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 8

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_off000099ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AD 5516 bytes
SHA-256: 0ff14f3ff2e94a87e05d9d5274beaec71d133f95fb5b7a22b6df173203316f74
font_01_sfnt_off0000ac4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC4D 14308 bytes
SHA-256: f4e318f700f57dabb20f3b600e6e386fcc1ac238bcbae46e88f257b3b1ae8569

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