Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c96460b38c3926…

MALICIOUS

PDF

56.6 KB Created: 2020-08-20 01:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c977e64c94e369fc1b46992f1b78bcdf SHA-1: 231f32cbe1d808142c551acde23d47a697b7b3fc SHA-256: 85c96460b38c39261928ad8ec844ec73fe635aa1fdde0a1e6f8486ebea02d746
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary lure. The heuristic firings indicate this PDF is designed as a link farm to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=swarna+chamaram+song In PDF document text
    • http://files.spiritual-research-network.com/uploads/1/3/1/8/131856046/2492982.pdfIn PDF document text
    • http://files.birthbygracemidwifery.com/uploads/1/3/0/7/130740483/6e0c9bf4.pdfIn PDF document text
    • http://files.keystonekidsgo.org/uploads/1/3/1/3/131380625/1afc994c8a1745.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/14247889642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7843/files/51973360273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/articles_grammar_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/87573662617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/23216936542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/jenis_obat_bronkodilator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/xorelifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/gisepobiximenisuzimibupuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/writing_linear_equations_worksheet_kuta_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/67390800575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/nasemudokupewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2765/0970/files/57516322373.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8306 5376 bytes
SHA-256: 8d125b07469fff334d94d7b8df122ca96f7559fe04b18222988905cd5b61b953
font_01_sfnt_off0000951b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x951B 3432 bytes
SHA-256: 5f65bf3b89c163007e49b4b424d458816ead450d0416918528607b8540cf3189
font_02_sfnt_off0000a291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA291 15600 bytes
SHA-256: d20b7eb12cc4b59e54f027350bfa25fa642abaae1bc52f9f179b19fc50d0d55f