Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0199df637e3aa99…

MALICIOUS

PDF

49.3 KB Created: 2020-08-09 06:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16e4a66714368a4441a172b37e123d38 SHA-1: 9cb86074b289778278751cc8dffd04e0a6bd2383 SHA-256: b0199df637e3aa996f107546bcbdb682da35b3e39522c7fefb55c96cfeb4413e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a large number of external PDF links further supports a link farm or redirection strategy. No scripts were extracted, but the malicious redirection is sufficient to classify the attack pattern.

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=center+text+r+markdown+pdf In PDF document text
    • http://files.uchpilf.org/uploads/1/3/0/7/130739362/rajizawer.pdfIn PDF document text
    • http://files.rashannaharmon.com/uploads/1/3/1/3/131381231/4218737.pdfIn PDF document text
    • http://files.heartrealization.com/uploads/1/3/1/4/131438642/zubakosa.pdfIn PDF document text
    • http://files.mcocoh.com/uploads/1/3/1/6/131637271/kugopijimubuw-setutezisefote-kitoxig-luvevaw.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/1/0432/5592/2856/files/7780117343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4292/1886/files/89928728074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5709/4551/files/norfolk_erc_horse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2572/6625/files/built_in_functions_in_sql.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/suvifazadeloda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/56509791556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/kipofaximuxuxom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/65894367298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4522/2557/files/cause_fear_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/sezakotawenezoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.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_off0000780c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780C 5108 bytes
SHA-256: 7acd4df1b94ad6c9a149bc2dc710c0e5b22b62011b17b0179ef5dffb33c8b9f0
font_01_sfnt_off0000896b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896B 14844 bytes
SHA-256: 49f6ff3788a9ac2f80e22f15c1d9f9a38706ca7653a8f97aa5f5b4037ce306f4

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