Malicious PDF — malware analysis report

Static analysis result for SHA-256 4578456efa2659b4…

MALICIOUS

PDF

54.8 KB Created: 2020-08-04 22:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 680aa8734fdf583a87b05377b5edefbf SHA-1: 73d13d06f8e7cf9983c91526e216979687ba0037 SHA-256: 4578456efa2659b4b429c5483cad3cc9e3181cc067411ac388bd8d832e270798
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One critical heuristic flagged a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=list+of+latin+abbreviations+pdf'. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external, potentially harmful, resources.

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=list+of+latin+abbreviations+pdf In PDF document text
    • http://files.silverrescue.org/uploads/1/3/1/3/131380128/dobafo_tananuxab_tumikub.pdfIn PDF document text
    • http://files.vdm46.com/uploads/1/3/1/6/131637309/melapisuxadad_pedamanuset.pdfIn PDF document text
    • http://files.gulnurozdaglar.com/uploads/1/3/2/3/132302913/38e83.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/1/0428/5274/5375/files/5510484081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/22558887539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/tusufatopeladokutup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/calligrammes_apollinaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/22727227655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5628/files/empty_world_sims_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5985/5012/files/35942415563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/44493113547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/42329996976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/68505948548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/delete_messages_discord.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C3 5176 bytes
SHA-256: f12ca0118b02ac22e24b3e1cf3a8f9ee296a71ad92c9327ac01eef2acc5ba4be
font_01_sfnt_off0000aa72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA72 10616 bytes
SHA-256: 8e2f8c22dea7c8808367e3a8a39cf8a4cbceb19f1f7dbd7b49ee44223463608b

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