Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f4fd8836497cd2…

MALICIOUS

PDF

83.0 KB Created: 2020-08-02 20:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f8e12663890f84ed23865c8d63c6fbe SHA-1: f4f54cbbbddae20495d0fefa8bfb13620d5b994d SHA-256: 70f4fd8836497cd2736156f294ffec0236a4c6e6fcc5caa1fe63806570c5662c
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains a URL that matches the suspicious redirector. This indicates a likely attempt to lure users to a malicious site under the guise of providing content.

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=1975+oldsmobile+cutlass In PDF document text
    • http://files.ccstudioinc.com/uploads/1/3/0/7/130776085/822972.pdfIn PDF document text
    • http://files.magkiefoundation.org/uploads/1/3/0/8/130813461/2aa5982b44.pdfIn PDF document text
    • http://files.thenakedforge.com/uploads/1/3/2/7/132740237/02449fb2984043.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/1/0430/8955/9705/files/45811308133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/getuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/jonalokupolifogexudena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9509/2376/files/thomas_calculus_multivariable_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/15137997142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/xupetavufatira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/voxetojetazabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/karimadepekibasevivoxina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/tovisar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2866/7798/files/iterate_hashmap_in_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/62870489587.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

Related samples 8

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_off0000e9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E4 5448 bytes
SHA-256: a1a161866f7b5d556b8bf53e78d736c7551f39b98d51978ad5a71fca1d7eb926
font_01_sfnt_off0000fc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 14688 bytes
SHA-256: 093e43d5f97538e5c4992b8f2ac595fa06b5a2c01ec6e22da1757aa0ec8468b9
font_02_sfnt_off00012a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A01 16060 bytes
SHA-256: 84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727

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