Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54402dd55d3cfd5…

MALICIOUS

PDF

59.9 KB Created: 2020-07-30 17:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8be056262b23cc03951c8320b74db14b SHA-1: d6c3c35b3c0265306509a3f57053b1f9d4ea43fe SHA-256: a54402dd55d3cfd5b3014d4cafb379b445e9c982d9fa4053200b658bf224a603
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is ttraff.cc, which is known for malicious activity. The document body, though heavily obfuscated, appears to be a lure related to 'Japanese conjunctions list pdf'. No scripts were extracted from this sample.

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=japanese+conjunctions+list+pdf In PDF document text
    • http://files.kcbevco.com/uploads/1/3/2/6/132680901/tukuwukos.pdfIn PDF document text
    • http://files.altruswap.com.au/uploads/1/3/2/7/132710700/sapeponafe.pdfIn PDF document text
    • http://files.latorreholidays.com/uploads/1/3/0/8/130813646/livitudo.pdfIn PDF document text
    • http://files.oicphotography.com/uploads/1/3/1/6/131636644/112142a3b4.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/1/0430/0315/0499/files/18580262749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/18198457690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/55974127181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/gawebow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/96526442388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3005/9927/files/77242441831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/44047312178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vepotarinaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/48929831369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2246/6720/files/1981188893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/xarurovunukadedidufebase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/gulotipivopasebatozoda.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 12580 bytes
SHA-256: 29e3c47c46a7120692354ad8b31825df7e02268f3cc6bd2be47c57aa6aaae3b8
font_01_sfnt_off0000a2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B1 5000 bytes
SHA-256: b7a81af0bad42cced1979acb3dd0957ebf8464d40cf042c1c45d3318cd5fff23
font_02_sfnt_off0000b3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C0 14972 bytes
SHA-256: 3419bf5db42bb1685bf421d3b6741a7f8103d49ecb641ad315efe895d39d396a

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