Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f357b5d09c2d8ed…

MALICIOUS

PDF

40.2 KB Created: 2020-08-03 22:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 360ce2804c5f7b76a29530cc646fb43a SHA-1: e4e400cf3ed3b62361fe7e332b8cd833583472f9 SHA-256: 0f357b5d09c2d8ed5ae0528a99dbae0a542bd853ab626de23b0f99691f0f73c2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector URL (https://ttraff.ru/pify?keyword=pemeriksaan+sediaan+apus+darah+tepi+pdf). This indicates a phishing or scam lure, likely attempting to drive traffic to malicious sites. 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.ru/pify?keyword=pemeriksaan+sediaan+apus+darah+tepi+pdf In PDF document text
    • http://files.kengallucciocup.com/uploads/1/3/0/9/130969761/tesawo.pdfIn PDF document text
    • http://files.barryboyce.com/uploads/1/3/0/7/130740512/d3866.pdfIn PDF document text
    • http://files.elshaddaiintl.com/uploads/1/3/0/7/130776200/rikedutabizinejava.pdfIn PDF document text
    • http://files.wilsonhypnotherapy.com/uploads/1/3/1/0/131070230/76bde89cc2c9e.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/1/0434/7684/4694/files/sukajatasaliroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3209/2573/files/dejefaluwuribom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/fenekugodimakafekakavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/63822654568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/45343527675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/rovifiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/60854379716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/vovojujowopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/72166658986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8520/7454/files/xewegetije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/62315431572.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_off00006084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 5312 bytes
SHA-256: b8ff32dfaa7bf51c145ae0ec73c1ea194ff4ef2765981357c87f6ce9d9dc42fe
font_01_sfnt_off00007269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7269 9732 bytes
SHA-256: b309cb5e6828c527cdbc3093641f2e731133a8ab5331940bc0540a695219cb36

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