Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c76624db766ea5…

MALICIOUS

PDF

53.6 KB Created: 2020-08-19 19:11:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7be0369afe43ad95ad53d5302fe69c95 SHA-1: 80bc07df6d657d46ea76e41604a40f8dbbb8cd12 SHA-256: b7c76624db766ea59dbc0244aa6987d74371c912c7c315086537e488f12fc8ae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM indicating a mass external PDF link farm. One of these links, https://ttraff.com/pify?keyword=bobinas+de+encendido+automotriz+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to redirect users to malicious content or for SEO manipulation.

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.com/pify?keyword=bobinas+de+encendido+automotriz+pdf In PDF document text
    • http://files.eatsxm.com/uploads/1/3/2/6/132681647/7001933.pdfIn PDF document text
    • http://junofevox.studydominica.org/uploads/1/3/0/7/130738615/93860.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/gejex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/velomusoforavuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8085/7253/files/41938950506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0633/6925/files/85248715810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/masinatitakojedup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3767/1080/files/mulive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9820/5349/files/91802900381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/82915415738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/risixiwunogit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/arabic_personal_pronouns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/5574006286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7930/6135/files/49285221145.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8592 5388 bytes
SHA-256: c720de1f2c7bc4fe9f835d13c80cbaa0457f8c047c4c00eea1fce40b49c6e747
font_01_sfnt_off000097c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97C7 10816 bytes
SHA-256: facf08d684c44e43299966a714a3411c0561e93a4a80b4edb5423cf9750befd3
font_02_sfnt_off0000bb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB07 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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