Malicious PDF — malware analysis report

Static analysis result for SHA-256 19308b3ff97ee87b…

MALICIOUS

PDF

55.5 KB Created: 2020-07-31 05:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69bd7eaa8762b8d9e86b30afd75affd9 SHA-1: a114e69868ce9d0c767fb42022bf9c49cd77799a SHA-256: 19308b3ff97ee87bc27db8fc6b68154039f22d3dd7af52fb5e10778e00280149
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically identified as a link farm for SEO poisoning. The primary redirector URL is 'https://ttraff.ru/pify?keyword=c%25C3%25A1ncer+de+pulm%25C3%25B3n+tratamiento+pdf', which is flagged as malicious. This suggests a phishing or scam attempt using a lure related to 'cancer de pulmon tratamiento pdf'. No scripts were extracted, but the presence of numerous PDF links and a malicious redirector indicates a high likelihood of a phishing or malware distribution attempt.

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.ru/pify?keyword=c%25C3%25A1ncer+de+pulm%25C3%25B3n+tratamiento+pdf In PDF document text
    • http://files.friendsofbarrenriverlake.org/uploads/1/3/1/3/131380456/48564.pdfIn PDF document text
    • http://files.jlwarfield.com/uploads/1/3/1/8/131857717/vaminoluterexuj-vibapaxujonug-fixiku-vuzag.pdfIn PDF document text
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdfIn PDF document text
    • http://files.singing4ourlives.net/uploads/1/3/1/4/131437626/1c70b6c10.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/1/0431/3874/4476/files/juxasijapomeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/44571899392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/57576042425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/pixavetelarewidexunufoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/porekafamodudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/xijunokidovovevagewag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/47163539776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9235/2928/files/nazikejevetibelura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5509/files/rezesojopomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/40609431634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7510/9018/files/jinanafabixudiwuw.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
    • https://medlineplus.gov/spanish/lungcancer.htmlIn 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_off00009905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9905 5396 bytes
SHA-256: b56aa7770072ae055042794740016b11ff77e7d95cbc28f505b901de35bba93e
font_01_sfnt_off0000aa74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA74 11100 bytes
SHA-256: 60ef2b43415c39cc6befe232c1aa4f55faffdc48c35eeca546e6533d011b1aa6

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