Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4b2be985102998…

MALICIOUS

PDF

45.7 KB Created: 2020-08-18 17:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64773fceff943548c1e6e98dba7ec553 SHA-1: f774246c9a488055b3a820e891a66376db49ed9b SHA-256: 2a4b2be98510299815f66e61fe9e4bc0d2d4a3580e29decb70b29f42c8c54385
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.com/pify?keyword=viruses+and+other+malicious+code+pdf', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the same malicious URL and other PDF files hosted on various domains, suggesting a coordinated effort to distribute malicious content. The presence of a link farm and a redirector strongly indicates a phishing or malware distribution attempt.

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=viruses+and+other+malicious+code+pdf In PDF document text
    • http://files.uqpalaeo.com/uploads/1/3/1/4/131407088/eb39f.pdfIn PDF document text
    • http://files.frenchstandardpoodles.com/uploads/1/3/0/8/130813846/4524903.pdfIn PDF document text
    • http://zoder.dragonflypaddleyoga.com/uploads/1/3/0/8/130874368/4050759.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1157/1865/files/marry_serana_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/lekadadowuwukaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/87342716912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/flex_space_between.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/56133465413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6308/3170/files/compton_effect_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/blossoms_of_the_savannah_guide_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/kidaguranitetotase.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_off0000684e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684E 5240 bytes
SHA-256: d7d37b01f9d228b87f1dee1d2a84fc61d62ba88c0410ad81f40ab828ccccfd7f
font_01_sfnt_off000079f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F0 10056 bytes
SHA-256: 5ef2e648a1c0b7bc21b77d7015a892f9c173a83782fbd2665a0d367831d5e51b
font_02_sfnt_off00009c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C45 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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