Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc007bf04d89f9b…

MALICIOUS

PDF

41.2 KB Created: 2020-08-22 01:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d193147a1fecfd9e90842f77758164e5 SHA-1: 8da474eaeb05e11bec0f44acfe1b197edc3bc373 SHA-256: ecc007bf04d89f9be5dbb789e4085ca408a601ae9da75a92e91cc6d3ebc20d20
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with the primary lure pointing to 'ttraff.ru'. The ML classifier strongly flagged this PDF as malicious. Although no scripts were extracted, the embedded URLs and heuristic firings suggest a phishing or scam attempt designed to redirect users to malicious content, likely for further exploitation or malware delivery.

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.ru/pify?keyword=installation+reporting+services+2016 In PDF document text
    • http://files.valhallavalley.com/uploads/1/3/2/6/132695445/zerug-xuzimawagonezu.pdfIn PDF document text
    • http://files.cloudcity.site/uploads/1/3/0/7/130738837/e0f157edc0.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/1/0435/1341/3791/files/bollywood_movies_free_2018_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8916/4440/files/dp_airgometer_exercise_bike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3486/9661/files/avast_antivirus_free_for_android_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6499/1637/files/latina_sex_tapes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3540/1111/files/cabinet_ministers_of_assam_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/atsg_automatic_transmission_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8825/5912/files/dieta_brucia_grassi_uomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/51291829787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2702/1480/files/gugax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7679/5030/files/13999264820.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_off000061f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F7 5580 bytes
SHA-256: 10bdc4809f75a7cb0ef588ccd95ea017ae5ba50f9766a5da5bd1d96d8ee887f7
font_01_sfnt_off00007507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7507 10332 bytes
SHA-256: 8a776b330c8373c9f079b9d60e21b52f6d452d71f95f19d796c4f99c39ede47d

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