Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aaadb78bbe6b043…

MALICIOUS

PDF

47.7 KB Created: 2020-08-12 06:01:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20891bf831e0c33573ccea2cee9a260d SHA-1: 1392d7dcb173dd0f6d99ac69d368697fd72f2e67 SHA-256: 7aaadb78bbe6b04389ba5fdaec2b2787f4dc8b4523c3da1a11fa73af710099e7
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for linking to known malicious redirector infrastructure. The document body, though partially corrupted, contains text suggesting financial statements and includes the primary malicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous external PDF links points to a link farm or SEO manipulation tactic.

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=estados+financieros+pdf+unam In PDF document text
    • http://files.manjaroresort.com/uploads/1/3/1/3/131398347/jexerijawebewo.pdfIn PDF document text
    • http://files.rusticedenphotos.com/uploads/1/3/0/7/130739398/91bb7b561.pdfIn PDF document text
    • http://gadaxakex.stmaryslbc.com/uploads/1/3/0/7/130776738/7965862.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/1/0431/5598/0439/files/dudelife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/33278104210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/79653687280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/9860010669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/bigafetajuseni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/99131948910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1241/5897/files/vakuromiwapokosubezavop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3085/1233/files/inventory_costing_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/94526414343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5327/5546/files/tizirofipoledenafo.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: rusticedenphotos.com 3 samples

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_off00006e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E26 5228 bytes
SHA-256: e677205dbc3e56cc3658cacc6405918c620c62814fe341e6f79545b9a79b46dd
font_01_sfnt_off00007fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD3 15700 bytes
SHA-256: c7f7dbdc92b21c73879f3f8ce4301718ec5434be235dabb5673b2fad690dd1fa

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