Malicious PDF — malware analysis report

Static analysis result for SHA-256 276e499da6a0944e…

MALICIOUS

PDF

54.6 KB Created: 2020-08-26 10:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3abbff988c89510bad0c38987f810459 SHA-1: d6081815aecfb54e643fa5dff654c8c98b28e094 SHA-256: 276e499da6a0944e0b38d5667d397200892b9dee03650590be4a831ec1ffd989
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.cc'. Additionally, it exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to disguise the malicious redirect. No scripts were extracted from this sample.

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=dia+do+campon%25C3%25AAs+boliviano+e+a+reform In PDF document text
    • http://files.independentauthornetwork.com/uploads/1/3/1/0/131071164/gamakufije.pdfIn PDF document text
    • http://zoxem.threelittlepigsbath.com/uploads/1/3/2/8/132814439/filojotudokeleb_luvol_vulejefovuze.pdfIn PDF document text
    • http://files.ppgcosmo.cosmo-ufes.org/uploads/1/3/2/7/132741555/ca0331bf6f4587e.pdfIn PDF document text
    • http://kederixem.journeys4life.com/uploads/1/3/2/7/132710621/wenavazotukef_jizivixototut_wovesexu_dijigi.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/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/xujirixoxofuzunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/8602/1543/files/expeditions_conquistador_character_creation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/final_cut_pro_x_trial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/ethical_issues_in_journalism_and_the_media.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/colonic_diverticular_disease_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/good_rules_for_discord_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0326/files/41678224623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/78354716583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3281/3469/files/80436336631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/11764417021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/golofilizedovegadibud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/rorifomakolebaxefupal.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_off00008f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8B 5652 bytes
SHA-256: be06a96b13c0df260ea491414a8839adb7ab0bdbc1359dfaeb3ad16ec849f57f
font_01_sfnt_off0000a26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26E 13276 bytes
SHA-256: 13324b7c4c33eb2be4f4615bb5a343e4075c6edec3027ff6d3b7bd5bc6217098