Malicious PDF — malware analysis report

Static analysis result for SHA-256 a555b30e3168b1d9…

MALICIOUS

PDF

43.3 KB Created: 2020-08-18 20:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b9739b5d9000ec22c58415f0b27510e SHA-1: 1afaf8e65d7d1fdb7a17ee37331d666df543f394 SHA-256: a555b30e3168b1d9da959e461cf83f91ad90ff873829e140f92149ac1377f9bd
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=fam+trip+report'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for users to access potentially malicious content. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=fam+trip+report In PDF document text
    • http://files.spiritfire.com/uploads/1/3/0/7/130775375/caf5e.pdfIn PDF document text
    • http://duvikebo.tableandelights.com/uploads/1/3/0/7/130775162/4019979.pdfIn PDF document text
    • http://numadavo.gaprx340b.com/uploads/1/3/0/8/130814674/pusefujejuvabe-nalokaz-xabefojovibumuj.pdfIn PDF document text
    • http://files.suefortgensartandprints.com/uploads/1/3/1/4/131438098/8376837.pdfIn PDF document text
    • http://files.kimbrulay.com/uploads/1/3/0/7/130740367/davububodono.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/1/0435/6482/6773/files/75213007999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/blocking_restricted_numbers_on_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/ziwisezobiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/mipubegisokomog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4479/7607/files/calculus_by_thomas_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0876/8675/files/20630957986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/89542547437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/xurosuxate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4600/8982/files/applications_of_nanomaterials_in_various_fields.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1895/1576/files/lezufapaberimobibisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5665/0650/files/most_popular_racing_games_for_android.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 4712 bytes
SHA-256: 6998979e34b2736a7055b82d66ba9895a60a6f74dca20ef7601511936fe0c498
font_01_sfnt_off00007d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D83 10368 bytes
SHA-256: b64ffebf2945fd4f0caaf6fba6cdf0faa15435414ec76495d218ab519822ca89