Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74b65710b5db283…

MALICIOUS

PDF

46.2 KB Created: 2020-08-25 10:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e89ed86d6e741551d5ba7542c9ccac8 SHA-1: be54f941b9f1c599c9b53b82f19151b01d0b7d81 SHA-256: a74b65710b5db2835997bae7664c86b0e2196bbffe4107bdcffe23b7da4f36d7
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=anvil+chorus+sheet+music+free'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though partially corrupted, includes the same redirector URL and a Shopify URL, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure via the embedded link.

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=anvil+chorus+sheet+music+free In PDF document text
    • http://files.bluechipcd.com/uploads/1/3/0/7/130738673/73c79.pdfIn PDF document text
    • http://xawumo.elizabethcyr.com/uploads/1/3/1/4/131453872/nogasasesesan-wezavukesipa.pdfIn PDF document text
    • http://files.susannej.com/uploads/1/3/0/7/130739239/7845282.pdfIn PDF document text
    • http://files.soaringtortoiseelectronics.com/uploads/1/3/1/8/131872015/tepofavimaxur.pdfIn PDF document text
    • http://tazog.amptheatreagency.co.uk/uploads/1/3/0/7/130776644/giboroninugixak-xafegipomami-fubutev.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/1/0436/0631/1070/files/pexeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4034/files/loan_agreement_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/56964131820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/5555547927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/29530059014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9791/3512/files/agile_android_software_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/81969016427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/89407176433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9868/files/calendario_oficial_2020_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2173/files/dejupakarixigaxesalabu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 4960 bytes
SHA-256: 5209e6428e5027a0ed183488413f2d7a48b42506f343d57d3079a28bb09b6a22
font_01_sfnt_off0000740e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740E 10084 bytes
SHA-256: 88daa63cb00dd46feb731096611e1ef5e8aa095c7fcc4bdbe8753cc49b25478a
font_02_sfnt_off000096e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E6 16120 bytes
SHA-256: 184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832