Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bcbd40531f69c03…

MALICIOUS

PDF

48.7 KB Created: 2020-07-31 21:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61addea7fc3a3791386c0d288e6018d3 SHA-1: 69518587a03aa5edf169863b8bacd78bda6a0bc8 SHA-256: 6bcbd40531f69c038353eb056ee917273b02c93cd4e94cd355fe5b414f36b744
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector to 'https://ttraff.com/pify?keyword=kril+tsuroth+osrs'. This, along with the 'PDF_SEO_LINK_FARM' heuristic indicating a large number of external PDF links, strongly suggests a phishing or malware distribution campaign. The ML classifier also flagged this PDF with high confidence.

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=kril+tsuroth+osrs In PDF document text
    • http://files.wagsoflove.com/uploads/1/3/1/4/131438468/4c413834e9df.pdfIn PDF document text
    • http://files.lorenasantacruz.com/uploads/1/3/1/6/131637178/zafaridavajanudilana.pdfIn PDF document text
    • http://files.evolvetogetherpdx.com/uploads/1/3/0/9/130969148/4924064.pdfIn PDF document text
    • http://files.guidedexposure.com/uploads/1/3/1/3/131380728/82201.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/1/0429/9050/2042/files/jolosagunap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/tijatefugezewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/zanetobafizemugapeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/60507431438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/tisifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2138/files/gugel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/4873000792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/7094429584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/vumeluni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/48684298000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/95693050835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/42277967427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/dowitesonirelinizuzapo.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_off00007cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDF 4532 bytes
SHA-256: cee09d8550a97777d7b99405958f24311280916c9ec719a7c8db2c0d2a176412
font_01_sfnt_off00008c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C43 13004 bytes
SHA-256: 954f486845ad836b214ebb557281e32d62fb08abc19b394306c9842a533f05f1

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