Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6523ee45800b7a1…

MALICIOUS

PDF

43.1 KB Created: 2020-08-12 08:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ed21ee3a3f27946fe94871fd98edfcc SHA-1: 5f3ad4ee759c2b4eb2fc6afe55e5cc8792da1ebb SHA-256: c6523ee45800b7a1465fd14c50caee74d42d9b09373a87fe1e5d1abcc2090709
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary malicious redirector link disguised as a legitimate download. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=sap+basis+administration+pdf', which is flagged as a malicious redirector. This suggests the document's purpose is to redirect the user to malicious content via this 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=sap+basis+administration+pdf In PDF document text
    • http://files.westtechmobile.ca/uploads/1/3/2/7/132741385/fipef_lelutifuxen_suxadipa_bovafiw.pdfIn PDF document text
    • http://bijifa.mekwoodworks.com/uploads/1/3/1/3/131379591/de64374.pdfIn PDF document text
    • http://files.nilsbucharest.org/uploads/1/3/1/3/131380342/c4c60614f3f59.pdfIn PDF document text
    • http://files.westvlietstreet.org/uploads/1/3/1/3/131383748/situxatefesupigemug.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/1/0434/0989/9670/files/17017044641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/l_argumentation_dans_le_discours_politique.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/ahmet_hamdi_tanpnar_be_ehir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/vebabexumiromexubarokan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8034/7801/files/25296130859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7682/files/livopawidilewopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/95461649324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/selexipag_for_the_treatment_of_pulmonary_arterial_hypertension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/75599837507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/geometric_transformations_yaglom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/torovuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/37272628450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2897/0652/files/burket_s_oral_medicine_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61411835552.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DA 5400 bytes
SHA-256: c3c8ff68c0bdbb98e240f7da1519cff9b6f347fefa8b65f4b967bba67c11ffed
font_01_sfnt_off00007c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0B 10340 bytes
SHA-256: fbdb766f3e2eda73e20ace9f45e2a0a7481ec66e1a1f7696f5a687083f8aa1f7