Malicious PDF — malware analysis report

Static analysis result for SHA-256 22398f148fa68a41…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 21:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be60fc639074bd7a60bfa464da1b3843 SHA-1: 39002de4f420d6e7f9d01c6473918211349e95a7 SHA-256: 22398f148fa68a4106b70cfb6e0673b6183d1ee4bd3269d5ecc932f4934edc3f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=reactions+of+cycloalkanes+pdf'. This indicates the document's primary purpose is to redirect users to malicious content. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link farm or SEO poisoning tactic to distribute the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated.

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.cc/pify?keyword=reactions+of+cycloalkanes+pdf In PDF document text
    • http://files.nobyting.com/uploads/1/3/1/3/131398507/womuzop-zunanabitavo-mokato.pdfIn PDF document text
    • http://kewiv.nvhandsandvoices.org/uploads/1/3/0/8/130813509/sudawub_kuxupigifa_kiwananipakoka_vakulutufes.pdfIn PDF document text
    • http://files.arkacia.com/uploads/1/3/1/8/131856852/3bb6179b2ce70.pdfIn PDF document text
    • http://files.cslconsultingllc.com/uploads/1/3/2/6/132695832/2810969.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/1/0434/5013/8784/files/12216439585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2054/files/tipos_de_prolapso_de_cordon_umbilical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexigubozorabavajodumixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/8955386830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/40375243015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0840/0280/files/wd_my_cloud_mirror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/banozorenelovuvaviguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/69253983375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8828/1761/files/in_search_of_lost_time_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7596/8928/files/govemojivudefugi.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: arkacia.com 3 samples

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_off000066d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D7 5224 bytes
SHA-256: 4bdf6f3c7cfbd193afd525eb36ff3a1c3fb202a22afe7b0b56700e1d0856e5da
font_01_sfnt_off000078c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C7 9448 bytes
SHA-256: c6e99d86340259da1a4ef75d2d04e3dc06c5663450c63873872180ab9444cec0

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