Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7481dad0277351…

MALICIOUS

PDF

48.3 KB Created: 2020-08-18 16:39:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3175fcc99d0b2e71b8b6cd1dbe297208 SHA-1: aa2f0a467f4fcf43abb632df6210996487cee125 SHA-256: 0a7481dad02773513b1500a85a657b961339fd4ef635d0e1f6aea0cdcdbfcf9b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=citrix+web+wrapper.+msi'. This suggests a phishing or scam attempt, likely to trick users into downloading a malicious file. The ML classifier strongly indicates maliciousness, and the presence of embedded links supports a social engineering attack vector.

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=citrix+web+wrapper.+msi In PDF document text
    • http://files.inspiredartexhibition.com/uploads/1/3/1/4/131437330/ruzulebekixonipis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/95608374205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/tufuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/articles_of_partnership_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/milady_theory_workbook_answers_chapter_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/68591749125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/48133775694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/67861632407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9363/8811/files/42959253787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3159/3113/files/dakowumabokesukonabevib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/39659490206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/kupije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/microeconomics_for_today_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pezudatilekubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/59089641203.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: heritagepumps.com 3 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6905 4860 bytes
SHA-256: b113a780e7bd7cba4cdd27196ceb7adee4b29cd373fc42055a91c945fe598939
font_01_sfnt_off00007998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7998 13852 bytes
SHA-256: c0105d128f296e2949d2730452302e709af95ce7278eb83838937148de9be701
font_02_sfnt_off0000a60e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA60E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c