Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cba8daaeed7a23e…

MALICIOUS

PDF

51.7 KB Created: 2020-08-07 23:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa25aa3d3fb14d78a4b63db3a86c1ee8 SHA-1: c9e0036adfd1a5f98834cdafc3ce757edb69ad07 SHA-256: 5cba8daaeed7a23e05cb077f4cd496f32fbfc16f80117bf29aa5a498c188e6b3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating redirection to known malicious infrastructure. The document body, though obfuscated, contains text related to 'airline city codes pdf' and includes the primary malicious URL, suggesting a lure for users seeking information. The ML classifier strongly supports the malicious verdict.

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=airline+city+codes+pdf In PDF document text
    • http://files.salvationarmymedia.org/uploads/1/3/0/9/130969999/xetikositazis.pdfIn PDF document text
    • http://files.classiccutssd.com/uploads/1/3/2/6/132681476/3476727.pdfIn PDF document text
    • http://files.ourhousecallvet.net/uploads/1/3/1/8/131857071/semosi-kimixasobal-baxokuw.pdfIn PDF document text
    • http://files.nelsonmotorsport.com/uploads/1/3/1/3/131380308/4311591.pdfIn PDF document text
    • http://files.harrisridgehomeranch.com/uploads/1/3/0/7/130776338/xaduwumudax.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/1/0434/7281/4245/files/32642258584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/lodikeguduzip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/88906469990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9051/7917/files/an_introduction_to_the_theory_of_aeroelasticity_y._c._fung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0976/8600/files/94454826771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63491738983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/enlace_quimico_que_es.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/powers_of_the_psalms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/jirepunexakonosogevomixuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/gisunirituminozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/57198725872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/42031729619.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA4 5032 bytes
SHA-256: 850210669465bb5d02cd84a17e9d409bdb0c4a850e2434347314949235140de4
font_01_sfnt_off00009ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE2 10652 bytes
SHA-256: fa725cd496f8cf00041d317475a420318b0db5d0d768f14b00fcd434a5394296

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