Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d539cb0eff7b6d…

MALICIOUS

PDF

44.7 KB Created: 2020-07-29 06:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dab2336796c301ed8da7232c9d08481 SHA-1: cc8f4a96429775bfbdff921ed39ae0f685d3fc2e SHA-256: d4d539cb0eff7b6dd2d983345a1a1d77964fc8aa5107fb44e9a235676cb14e15
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm. One critical heuristic indicates that a link within the document redirects to known malicious infrastructure (ttraff.ru). This suggests the document's primary purpose is to redirect users to malicious sites, 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=exponents+worksheet+pdf+7th+grade In PDF document text
    • http://files.sharehisstory.org/uploads/1/3/0/7/130776326/dd7da3ff6.pdfIn PDF document text
    • http://files.ruralchurchpastorsnetwork.com/uploads/1/3/1/8/131856166/0c07c28fe43.pdfIn PDF document text
    • http://files.itfcwomen.co.uk/uploads/1/3/2/6/132682570/b6487.pdfIn PDF document text
    • http://files.healthyjuicedietlife.com/uploads/1/3/2/7/132740185/lanavikefoxe.pdfIn PDF document text
    • http://files.sbfence.com/uploads/1/3/0/7/130776655/9082740.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/1/0433/7028/3173/files/11785701154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1527/2605/files/ludekuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/lagutubuzemiduxeburumawup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6875/2023/files/larolodafotikewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/46967526720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/difakonomufodevorogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/sekuzawiberavonuzizotuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/dumasegewaxefovij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/rurumibuzosabuzumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/kezelodamuxijamefag.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 7

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_off0000727d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x727D 5272 bytes
SHA-256: 38bab5b4314fbec8acd491f352425f0ddf80105bfe50e1bfd0d0cfb7a6550a25
font_01_sfnt_off00008479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8479 9760 bytes
SHA-256: e648b3d0f505afa5c86d2277cedbabc32d24c14c6cd05084c10e4a677b08b07b

Open this report in the interactive analyzer, or submit your own file for analysis.