Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bf554ccbf1e0e84…

MALICIOUS

PDF

53.3 KB Created: 2020-08-21 12:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd038e60656b9e29845dd60d01f94401 SHA-1: 62b1e4eb8fd502d47d3e064e466b26876be375e3 SHA-256: 1bf554ccbf1e0e84b51b3aff12a8e65ebbc321a34076b5b57351e6db3c4b5421
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the presence of a large number of external PDF links, many hosted on Shopify. The primary malicious URL, https://ttraff.cc/pify?keyword=malayan+flour+mills+berhad+annual+report+2017, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains text related to 'Malayan flour mills berhad annual report 2017', suggesting a lure to disguise the malicious intent.

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.cc/pify?keyword=malayan+flour+mills+berhad+annual+report+2017 In PDF document text
    • http://files.samanthastewartofficial.com/uploads/1/3/2/6/132682295/wojiroxudid.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/1/0439/4886/7739/files/96368803100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/political_sociology_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9970/files/vururekiketenuzatefuviva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3712/files/malambo_no_1_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/sixazedimeleresipifin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6501/5446/files/29653003664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2202/4867/files/32259262837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/fofulusagetog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/convert_to_word_acrobat_7.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_off000084ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EC 5932 bytes
SHA-256: f8d521c97f3e1fcdd7b0a5115573a95307a3e764697318bf1a874e5e6989e033
font_01_sfnt_off00009908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9908 15528 bytes
SHA-256: 3e7885b1a8759a3eef6d4ff6d0aca5151adcd0b27775589207515fab8cbcf801

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