Malicious PDF — malware analysis report

Static analysis result for SHA-256 a994efd2814bf198…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 05:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a5be5d00a412259257e54a2122c339d SHA-1: 796ba4519561c49800aa192955133ab9965aaf17 SHA-256: a994efd2814bf1985cb6869cb483af64f8e115e9528f0caa74d747c0ff40fbd3
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to lure users to various sites. The ML classifier strongly flagged this PDF as malicious. The presence of the URL 'https://ttraff.ru/pify?keyword=der+bestatter+serienguide' points towards a redirector likely used for phishing or malware delivery.

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=der+bestatter+serienguide In PDF document text
    • http://files.rbsknowledge.com/uploads/1/3/0/7/130776350/pufejo.pdfIn PDF document text
    • http://files.thegeneralmusic.com/uploads/1/3/1/3/131381374/311983.pdfIn PDF document text
    • http://nakavo.vallenduuk.pl/uploads/1/3/1/0/131070382/labolilasuk.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/1/0431/4900/0864/files/lexogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/que_se_significa_languidece.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/89653733340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/0497/9368/files/antroposentrisme_biosentrisme_dan_ekosentrisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9588/3925/files/49488504367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2427/7927/files/behringer_x32_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/wojubijeladupagof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/36125592714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/693666849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wikuzolatokobojopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/vogawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2855/2602/files/lodus.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_off00006e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E52 5100 bytes
SHA-256: 692172ffca12e95b893249950e1c1f4467c3e12d0e108967fe31636476760682
font_01_sfnt_off00007fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB0 11368 bytes
SHA-256: b27800a21000684cd27bdf151cfccddb37f64e8e33d4e156ef2e42897d0cbd47

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