Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16a6a855dd6b641…

MALICIOUS

PDF

117.4 KB Created: 2020-08-08 05:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e53f387615a18def6b093403e250a79 SHA-1: e13769387dd964eebb99bd58c6731bce4ccefdfe SHA-256: f16a6a855dd6b6412ff1a6e99c050059b18a2017073c71afae86531b18a309b2
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure the user to a malicious site.

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=el+capitalismo+tardio+pdf In PDF document text
    • http://bosos.elizabethclaretaylor.com/uploads/1/3/1/6/131637814/milofuxeg.pdfIn PDF document text
    • http://files.visitkaunas.net/uploads/1/3/1/4/131438018/bapori_jojuxep_zoduxak_mowerabo.pdfIn PDF document text
    • http://files.umcofmacedonia.org/uploads/1/3/1/1/131164016/9162366.pdfIn PDF document text
    • http://files.andrewbattye.net/uploads/1/3/2/6/132695578/nirewu_mujive_bubugazo_birow.pdfIn PDF document text
    • http://bebupiv.evernaturalphotos.com/uploads/1/3/2/6/132681513/2ff0d.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/1/0433/0687/7080/files/kuzizurogepibisomagin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/83339554738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2678/9030/files/le_grand_livre_du_bouddhisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/9519920095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/wemuzukegejatodos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/41731619609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/72521924366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/latorokodezukofunoloxubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70339383958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/ncic_code_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/sizinavelaxobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/kiwudifavakamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/50143527816.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 6

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_off00018db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18DB5 5256 bytes
SHA-256: 1a691008f8207ec44d055564666ba570a7c2af50375a69dbe334562447998fff
font_01_sfnt_off00019f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F83 11984 bytes
SHA-256: c702c5f7107395aa502dc7f0c63819f5602df68073a849be1094596ed60e09b2

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