Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97270ba48e5b8fb…

MALICIOUS

PDF

48.3 KB Created: 2020-08-03 13:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c88df6f90836fff062b65514d7b2787f SHA-1: e3853461f386bc499093a5b02b198ed9a06f2c1a SHA-256: d97270ba48e5b8fbd5fa8b72c31af885f8f2917089a0c8a0d269b749d3cd4dd2
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO poisoning. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is also present in the document body. This suggests the primary purpose is to redirect users to malicious content, potentially for phishing or malware distribution.

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=absorptive+capacity+theory+pdf In PDF document text
    • http://files.starplastny.com/uploads/1/3/1/1/131163669/gulipik.pdfIn PDF document text
    • http://files.stkittswatersafaris.com/uploads/1/3/1/0/131070109/7544638.pdfIn PDF document text
    • http://files.peaceprofits.org/uploads/1/3/0/9/130969728/4abe59.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/1/0438/4620/5602/files/kojumat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/ligefalig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/sineneduboxepidid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/25305564297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/693021034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/raxupubofefopisupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6823/files/cookie_clicker_auto_golden_cookie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9118/9157/files/45668098988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/95443933112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/zorobapuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/39118528471.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
🗂 Part of campaign: armonklions.org 3 samples

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_off00007dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDA 5500 bytes
SHA-256: 9a32eb4d0a7b99b527f173cf1c4cbca5a38198075c8ca249807bdd356b79bfa7
font_01_sfnt_off0000908e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908E 10420 bytes
SHA-256: 03997b509da388533b2f1de8a4fc9ac5b37b9dc436f6da8e9f3a7e2a93a4fc4e

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