Malicious PDF — malware analysis report

Static analysis result for SHA-256 334a1fb30faea94e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-19 02:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90f2621f7fc4271454c724adfaf4aa83 SHA-1: f6db7ee298e01b21c90ac697a3c94f9778848351 SHA-256: 334a1fb30faea94ead404c48b4d58fca18007f96463e022a1b72f3710d46e1f8
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the document links to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=grafoil+gasket+sheet'. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution. 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=grafoil+gasket+sheet In PDF document text
    • http://files.robertbiederman.com/uploads/1/3/2/6/132683017/861c30018704d9f.pdfIn PDF document text
    • http://files.arrowdancestudio.com/uploads/1/3/1/3/131379296/tisewufedu_xorodegupokux_gigadukewusa.pdfIn PDF document text
    • http://fuguranad.dancepointenz.com/uploads/1/3/1/0/131070374/kubuxopepur.pdfIn PDF document text
    • http://files.kimberlyrogers.net/uploads/1/3/1/4/131454207/jinujefeku.pdfIn PDF document text
    • http://files.lifeongravel.com/uploads/1/3/0/7/130776493/4763255.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/1/0431/6066/6274/files/55029462526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4976/2459/files/bastien_vivs_une_soeur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/journey_map_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/easy_guitar_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/beach_buggy_racing_2_mod_apk_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/gonudal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/kotaduwemepukomafawuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/sims_3_baby_cc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/wigafuline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/racconti_brevi_in_inglese.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 4804 bytes
SHA-256: 7bbe7671ae5e683291c615163901e35c2dd719163a52c8fd4295b67b122a8abb
font_01_sfnt_off0000764c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 10824 bytes
SHA-256: 01c618427ecb71036f65f609efe8be8b37e64f600aee9d3fdd570cca4370efae
font_02_sfnt_off00009b2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f