Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0e60d5e520dceb…

MALICIOUS

PDF

55.7 KB Created: 2020-08-07 03:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ca5b38f9615feaf4703fc39e83edf5d4 SHA-1: a17c88e32189814c1b33a4bd44556c15888836fd SHA-256: bf0e60d5e520dceb2bd970e4e0fcf7dfdfeae076219ef2dcaf5c66968d3e1e23
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document exhibits characteristics of a link farm, embedding a large number of external links. One critical heuristic identified a link to a known malicious redirector service, ttraff.ru, which likely serves to obscure the ultimate malicious destination. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the sheer volume of links and the presence of a redirector suggest a phishing or malicious redirection attempt.

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=straddle+injury+adalah+pdf In PDF document text
    • http://files.ttranlandscaping.com/uploads/1/3/1/8/131856672/41ec83.pdfIn PDF document text
    • http://gixev.flex-sander.com/uploads/1/3/0/9/130969358/tiwuruner_pezaxumevibedel_kapore.pdfIn PDF document text
    • http://files.rehobothconcertband.org/uploads/1/3/0/7/130775309/zireju.pdfIn PDF document text
    • http://files.athensvideo.net/uploads/1/3/0/7/130776420/eec0ebb88bb0f.pdfIn PDF document text
    • http://files.fairygrasshopper.com/uploads/1/3/2/7/132741110/7d541fc.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0432/9517/8902/files/java_equals_vs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/zamototenixubogifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3028/0352/files/39940936235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/53833242188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/bugowazevutazivuvazofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9383/5432/files/3039970121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/ziwosuxajotixodivubuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4822/files/rutuvixagelalebaluliza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/87622471135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4026/8711/files/vivotokitalus.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

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
stream_005_off000083f5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x83F5 14124 bytes
SHA-256: f2b13a378e224926dea5f2fb6d7fa943953d57448619a146151cc83439f4e1d8
font_00_sfnt_off0000722a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722A 5232 bytes
SHA-256: 9edbee9c4a18a5632c043ce4810d594d8ba4d44c4d597682f64b57ae0ceadd30
font_02_sfnt_off0000ab72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB72 10716 bytes
SHA-256: 25585d256a63b9a3ffeb5d818dc481b470cddcac1e7140de5e6740926e58dee1

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