Malicious PDF — malware analysis report

Static analysis result for SHA-256 9043c55666edb967…

MALICIOUS

PDF

79.1 KB Created: 2020-08-25 12:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75abada01ae4bc92c5413d09626fab85 SHA-1: 74673af9c40f6cafa50cdf207b7ef5832f0d6ba4 SHA-256: 9043c55666edb9672d254dab65c9a02035685f3cfc3825ee81ff82294c3d8e25
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector (ttraff.com). The document also features a 'download button' heuristic and a link farm, suggesting an attempt to drive traffic to malicious sites. The presence of a link to a redirector indicates a likely phishing or scam attempt, aiming to lead the user to malicious content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bibliography+cards+mla+format In PDF document text
    • http://files.cyberpost.us/uploads/1/3/1/3/131383478/e4a2ef2f62.pdfIn PDF document text
    • http://files.megabitesportfishing.com/uploads/1/3/1/4/131437311/diratezunagadojutu.pdfIn PDF document text
    • http://togepe.stevendchesterphotography.com/uploads/1/3/0/7/130775940/b48ad9ca2.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/1/0428/8351/4527/files/77451514667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/89935433830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6933/3916/files/chajja_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3056/9382/files/cours_complet_sur_l_algorithme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2986/4343/files/multiplication_worksheets_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/japixunalopaborek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/site_reliability_engineering_how_google_runs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6571/2535/files/53717841750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/97426147727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/pabizexob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1257/0787/files/environmental_psychology_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/panixifakisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/juwopigonezofafibogi.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_off0000f7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A4 5860 bytes
SHA-256: 3bbbedbfc138a908e218c262a4b4994db7fed49ce177eb1eca49528353af76d3
font_01_sfnt_off00010b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6B 10588 bytes
SHA-256: f4451024d1cc42ceeac089eaa3929730824bfea5cd9d0ea5771f3d6f6bf81c19