Malicious PDF — malware analysis report

Static analysis result for SHA-256 5313c49e5f1359e0…

MALICIOUS

PDF

57.6 KB Created: 2020-08-09 00:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8872c2682a65fb439784e1e160cdad9f SHA-1: e1d0444a319d26055ff1e9541d4f6ea4672e2632 SHA-256: 5313c49e5f1359e049d52623a6e39d37181bafaeda247b7bbe3433b6a8bb7386
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=boards+and+beyond+slides+pdf+reddit'. This URL is presented within the document body, disguised as a search result. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=boards+and+beyond+slides+pdf+reddit In PDF document text
    • http://kukuma.mifitnesslife.com.au/uploads/1/3/0/7/130775403/8035852.pdfIn PDF document text
    • http://files.wilmingtonohw2020.com/uploads/1/3/0/7/130776817/7871241.pdfIn PDF document text
    • http://jopit.grandridgemeadowshoa.com/uploads/1/3/1/3/131383791/bd0bd905121.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/1/0431/5706/1788/files/95520968567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/zewuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/81642261494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/4335581435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/78052617096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/ayushman_yojana_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7832/7199/files/86049234582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1877/9815/files/lovulovutatano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7637/files/irish_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7750/1095/files/86628318898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1560/files/46404179999.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 2

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_off0000a23f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA23F 5324 bytes
SHA-256: 83a647e68f746cd0f3b805f01a6bb1f8bce523d7db1d0be5d2f7abe908c3c746
font_01_sfnt_off0000b468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB468 10796 bytes
SHA-256: 2a11fc55ab69330213153f388886e46eb009b7080ea61091ab78b72872aa3307

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