Malicious PDF — malware analysis report

Static analysis result for SHA-256 d17bbcfa3eea7e20…

MALICIOUS

PDF

39.9 KB Created: 2020-07-31 19:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f77d2023f5f69a3e41b80b0a63b047f SHA-1: 14dca544163cf460d7e5e0be7f2c52f39589dee5 SHA-256: d17bbcfa3eea7e2082dddbdbb9cb4d4dba66ebee65cf7e017bd438ef463af43c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=how+to+protect+cells+in+google+sheets', is identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=how+to+protect+cells+in+google+sheets In PDF document text
    • http://files.apocalypse-party.com/uploads/1/3/0/7/130740232/nilutum_vilotesijo_fesefebusukel_nafojukijuviz.pdfIn PDF document text
    • http://files.dpcontainers.net/uploads/1/3/1/4/131437508/cee92a8f84c.pdfIn PDF document text
    • http://files.sidingsupplyinc.com/uploads/1/3/1/4/131482959/1945563.pdfIn PDF document text
    • http://files.walthamforestwomeninbusiness.com/uploads/1/3/1/4/131437953/momewunajosu_mosisasa_lizirowejoteji_feribitu.pdfIn PDF document text
    • http://files.thegolfadventure.net/uploads/1/3/2/6/132682919/c24403a61aa133.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/1/0430/8477/5577/files/99488788476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/jumewetegidaferubudexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/4523712583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/47491512711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9029/7503/files/86055365990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/fomalowomeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/xajavumipesaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/99356602399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/riroresoritusopefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/nupibosux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/20312752607.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 6

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_off00005ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF1 5040 bytes
SHA-256: a1fadad34b04ce99edc96bc08bddb9a22cfddbf68c3c5189ac15cebd72e4a9dd
font_01_sfnt_off00007124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7124 9868 bytes
SHA-256: 068c5a0dbd515bccfa9db2b0dd448948602b4f8abc9d5ef081edd4081653fad6

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