Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd70ca7b83d12f7b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-21 14:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d43c201fd05722aba2a946906b38f44b SHA-1: afe27d25eed361a310d75aebcb593f5805d79cbb SHA-256: fd70ca7b83d12f7bc0bc5e75653893aa8cb26e8deb2ab3a8dc76d03095adf67a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one prominent link to 'ttraff.com' disguised as a Samsung Android beta program announcement. This indicates a phishing or redirection attempt. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious links and the overall suspicious nature of the document. No scripts were extracted, limiting the analysis of direct payload execution.

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=samsung+android+10+beta+programm In PDF document text
    • http://files.nlgpdx.com/uploads/1/3/1/0/131071062/84e1e7df275d878.pdfIn PDF document text
    • http://lirewiwiv.potluckcornwall.co.uk/uploads/1/3/1/6/131607310/daratefikawabak_marov_lirogotuzofesor_lubopipenox.pdfIn PDF document text
    • http://files.walkaidscooter.com/uploads/1/3/0/7/130738988/kebebojekalop-kebolufop-wibojerux.pdfIn PDF document text
    • http://files.fetrowphoto.com/uploads/1/3/1/3/131379266/5e3af033f.pdfIn PDF document text
    • http://vigabenu.stuwilsonpics.com/uploads/1/3/0/7/130776031/837313.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/1/0430/5456/3477/files/tidolufabenasewamasiterez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/dizuzalefefebavuraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3737/6157/files/67229954866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/novakejadebapidazimuritip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/saloxatuwanararaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7851/5864/files/85528198966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/nenen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5523/5740/files/range_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/20612131888.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 3

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_off0000631e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631E 5684 bytes
SHA-256: c9224cdc46d248c234e359d065d4ec83bb070b968382d2338f6f5e0d3bcf7d3d
font_01_sfnt_off0000764b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764B 10032 bytes
SHA-256: 8b0f4c02f708205cd3ed3b2393e2701ba9509ae107256c1a30c6d5ade58ae0f2

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