Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7d60de79471c74…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 21:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9e1faf9fdec4de93a7be867a93d2387 SHA-1: 82189a48e28526ff9b4129e6748c7f9aeabb2d57 SHA-256: 1b7d60de79471c74994594b1f5f48e3844f81d37a1cc6bbbec6dc6e544e99528
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure for an advance-fee scam, referencing a 'Byju's ias app' and directing users to a malicious redirector link. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL identified is https://ttraff.ru/pify?keyword=byju%2527+s+ias+app, which is flagged as a known malicious redirector.

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=byju%2527+s+ias+app In PDF document text
    • http://zixudejur.gvp.wales/uploads/1/3/0/7/130776433/4986896.pdfIn PDF document text
    • http://files.toddspianoservice.com/uploads/1/3/0/7/130775396/6025577.pdfIn PDF document text
    • http://vezesi.helpinghandsrescue.org/uploads/1/3/2/8/132815806/dizaku_webeto_dimokekipune_tones.pdfIn PDF document text
    • http://files.makeasmartstart.com/uploads/1/3/1/8/131856173/1983294.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/1/0434/2136/8482/files/architecture_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/wallpaper_akashi_seijuro_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4631/files/antenna_and_wave_propagation_by_kd_prasad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/8523004192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6523/5866/files/ffxi_how_to_change_screen_resolution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/78495336933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/palm_system_dynamics_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3391/9393/files/building_information_modeling_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1033/4620/files/96711813294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/33442312433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/kevuvufatidanagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/vegokeligozapulagakugax.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_off0000648c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648C 4948 bytes
SHA-256: 3844172c2fad35e20f73e4db6af0ec8b121f52282f49e4192e9fc7d3c0aeca36
font_01_sfnt_off0000758c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758C 10092 bytes
SHA-256: b00aa0df29f4c2c7043dff259b4a610fce75c8a14116affc18e7a0cd135b2c72

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