Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0d36a04c6c09b5…

MALICIOUS

PDF

42.7 KB Created: 2020-08-16 19:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b494769804f1d37ce2dca125bdcb8abf SHA-1: dd62305f2f0bf2a7f6b7e841fca5287c168697d9 SHA-256: cb0d36a04c6c09b5ee9ab427764cfb2c308099be0cca22320464bff76b4ac0f7
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded document body text, though heavily corrupted, contains the URL 'https://ttraff.com/pify?keyword=avg+cleaner+mod+apk', which is also flagged as a malicious redirector. This suggests the document is designed to trick users into clicking the link, likely leading to malware download or a phishing page.

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.com/pify?keyword=avg+cleaner+mod+apk In PDF document text
    • http://pesoxaxa.salishfysprt.org/uploads/1/3/0/7/130775085/6703957.pdfIn PDF document text
    • http://xidulad.pumpkinandsprout.co.uk/uploads/1/3/1/6/131636612/483ff.pdfIn PDF document text
    • http://files.en-linea.com/uploads/1/3/0/8/130813325/816cff711.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/1/0431/6217/3604/files/fowivanikejejapepalifosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/15722364142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/3065158934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0074/9467/files/experimento_bobina_de_tesla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/6579/5737/files/black_eyed_peas_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7210/2301/files/honda_cbr_150r_parts_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/jipanumesifori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/85100727910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1844/5223/files/tecnicas_de_asepsia_y_antisepsia_quirurgica.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 4

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_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 5328 bytes
SHA-256: 679a075601132dc57aaaf5bd883d09ba29d74fd62be19fe9342c8610f280a479
font_01_sfnt_off00007a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A96 10520 bytes
SHA-256: 027ff5b61552c917cdc6e6fb5538c6adf51db79a97ce6b2f79ca844463bc3433

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