Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc993ffc1dc9a4cd…

MALICIOUS

PDF

48.6 KB Created: 2020-08-18 20:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d7d43f0d7568b261a195f3fbd2c77d9 SHA-1: 21e8d14ea891391d4f3d2a35f1869b66b88efaec SHA-256: bc993ffc1dc9a4cd8f88c2793fb5f65bd940c78be659518a54d5cb0f3f9fe3fc
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a malicious redirector at ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'aplikasi browser android terbaik dan tercepat' and the malicious URL, suggesting a lure to a potentially harmful site.

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=aplikasi+browser+android+terbaik+dan+tercepat In PDF document text
    • http://files.davidgarza.com/uploads/1/3/1/3/131382387/77bc396.pdfIn PDF document text
    • http://vozix.willflyguitar.com/uploads/1/3/1/4/131438216/kopis-nozidatadabas-wemot.pdfIn PDF document text
    • http://files.justanotherflutist.com/uploads/1/3/2/7/132712407/taturazewobak.pdfIn PDF document text
    • http://files.myhulahoops.com/uploads/1/3/0/9/130969489/turipal.pdfIn PDF document text
    • http://bazase.elliottmilesmckinley.com/uploads/1/3/1/6/131636665/4116278.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/1/0430/8244/9045/files/retirement_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/75951404985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/cours_anglais_seconde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/gems_education_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/92294457380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/decode_base64_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/xawipemakedujud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6465/3984/files/bewikaxubusifoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/52444966085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.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 6

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_off00007f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F62 5352 bytes
SHA-256: af1aff458eddeb68f3a7b413d739dcad1d3d9fba0bedf0ce9a9c58d9e915773c
font_01_sfnt_off000091a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A6 10548 bytes
SHA-256: f3c7e52716e1755afe3aeb0f23906148061a216ee8eea06e2e88517240a23a1b

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