Malicious PDF — malware analysis report

Static analysis result for SHA-256 28685f9d5039a7c3…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 06:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fd34ab0460ddb318e542ae34172f4c3 SHA-1: e4d37bd98c32067fca41f950c3a597f368d82f63 SHA-256: 28685f9d5039a7c38453828ee6d77bb5981c0b61c3bedcf2d01ef6ef21322160
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=cbs+this+morning+new+format+reviews'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0438/4777/8469/files/faxiduvorararurofa.pdf'. The document body, though partially corrupted, contains references to these URLs, suggesting an attempt to trick users into visiting the malicious redirector.

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=cbs+this+morning+new+format+reviews In PDF document text
    • http://files.saranyawellness.com/uploads/1/3/0/7/130775551/vuramate.pdfIn PDF document text
    • http://files.veronicapark.space/uploads/1/3/2/8/132816066/7043026.pdfIn PDF document text
    • http://files.aneveningwithrichardgale.com/uploads/1/3/0/7/130776001/fotabogavomanaz.pdfIn PDF document text
    • http://files.atmltharris.com/uploads/1/3/1/0/131070722/9e885ec96.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/1/0438/4777/8469/files/faxiduvorararurofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/3267/5239/files/15940191106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/jevofamafuwugosalapila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4301/0198/files/joint_distribution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/junetiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/junivobakowuzitux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9826/0124/files/gulimidefolobale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/porebipivikajidal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/conjugaison_avoir_et_etre_a_tous_les_temps.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 5

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_off00006853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6853 5344 bytes
SHA-256: 8159212b6d15241abf098be1331f521a95161fd48d062d0a0f8fc5deaa324f14
font_01_sfnt_off00007a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A73 9912 bytes
SHA-256: 45b4b879801eb0ef0d25b0a61ede4dde68daa2e1edc5fcdb2ef7d925e50fe83d

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