Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf83d332e337680a…

MALICIOUS

PDF

67.6 KB Created: 2020-08-06 06:06:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0e533f4c914fff3e5116b2b11065478 SHA-1: f5319f6a2b008595426925212e939d44713b0ec6 SHA-256: bf83d332e337680a9a68b102e79905add914e2cff3d7aae29f281afe726701ac
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL 'https://ttraff.ru/pify?keyword=singapore+airlines+company+profile+pdf' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, reinforcing the malicious intent. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive 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.ru/pify?keyword=singapore+airlines+company+profile+pdf In PDF document text
    • http://files.stettleragsociety.com/uploads/1/3/1/6/131636808/sufexulofugajozukob.pdfIn PDF document text
    • http://files.piratereaders.org/uploads/1/3/2/3/132302963/vivadop-mobexozunaj-votebil-lavalaguga.pdfIn PDF document text
    • http://files.woodburyspeclass.com/uploads/1/3/1/6/131607600/bovovagudiz.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/1/0434/5085/9670/files/funilege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7003/6904/files/anaconda_spyder_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1063/files/texuwixop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/kokerokekojevarexelumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/gotumasekiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6123/1262/files/neuralgia_del_trigemino_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5024/6048/files/ruvugamokijusimediwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/54501352049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/simobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5874/8837/files/funalixod.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 5

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_off0000ca1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1E 5680 bytes
SHA-256: 9497475c55f7f808169aedd5db68134a126e17bf0d26c64e02a1d8c08039f28c
font_01_sfnt_off0000dd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD71 10472 bytes
SHA-256: e6959cd95bb124d515471542735a1739d23812013a21fabde5da22216f5b4076

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