Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4485ad93fa0909…

MALICIOUS

PDF

66.4 KB Created: 2020-08-08 12:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72762352a3f5e99928c42ac0fe3ac80f SHA-1: 8058c1935554b73025a6d397ec46b2ff0da2515a SHA-256: ed4485ad93fa090917e67fea041909b911cafe346e4c558bdfec7a2e44c93357
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=prescriptive+analytics+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. This suggests the document's primary purpose is to redirect users to malicious infrastructure.

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=prescriptive+analytics+pdf In PDF document text
    • http://files.biodiversitymarine.com/uploads/1/3/2/6/132683000/jajupesetuvo.pdfIn PDF document text
    • http://files.madeunderthemoon.com/uploads/1/3/1/1/131164452/lewokevivu.pdfIn PDF document text
    • http://files.aquariusfunding.com/uploads/1/3/1/1/131164386/443476.pdfIn PDF document text
    • http://vujed.aycreative.co/uploads/1/3/0/7/130739590/75a178e58b7.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/1/0428/5769/3347/files/cyclical_vomiting_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5194/0000/files/tajuzijanezabom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/1079267613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kulabegidubonigupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6393/5129/files/allison_transmission_operators_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/76533063057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/52172019478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6343/files/28913613804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3476/2654/files/doxuwutisubevuwiza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/fisofar.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: biodiversitymarine.com 3 samples

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000715c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x715C 19560 bytes
SHA-256: bef1f4046312b102ed1952a77b436b3ee5f7a5302f6190b4d776ddb10893da87
font_01_sfnt_off0000af6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF6D 5312 bytes
SHA-256: f3de6285e6367090af4567324f75c08d84c87ecc6b30d3e88a751b51cba2a1de
font_02_sfnt_off0000c1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A0 11524 bytes
SHA-256: 75eb92c57b93ea1933a631a5b8f0319cb1201fa05c865f69e145ca8abcdceffd
font_03_sfnt_off0000e783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE783 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550