Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5afa3beb0e19ade…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 10:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ce313d80c01225014f171582d07362a SHA-1: 07aa9e9dc0e984cdf5d0a482b9b7c8ebce008b40 SHA-256: a5afa3beb0e19ade072994e0984bd6d5abe31d13e943b58385755aa3c2b532b0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a common tactic for SEO poisoning and driving traffic to malicious sites. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=how+many+abortions+are+performed+annually+worldwide`. The document body, though partially corrupted, contains this same URL, suggesting the document's primary purpose is to trick users into visiting this malicious link. No scripts were extracted from this sample.

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=how+many+abortions+are+performed+annually+worldwide In PDF document text
    • http://rabom.bsl-sc.co.uk/uploads/1/3/2/7/132741508/xutalebegogakepona.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/1/0439/1036/5339/files/bodybuilding_bulking_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6530/1400/files/functions_of_the_south_african_reserve_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/cadbury_worm_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8240/7318/files/nedokaguleboba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5860/9817/files/browser_open_blocked_website_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7108/6492/files/vezerumevumesebiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/dokugudodowozefiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/86289083784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/nolilasekenegirabilikox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/advanced_excel_2016_exercises_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/temeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/evangelismo_dinamico_luisa_walker.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
🗂 Part of campaign: bsl-sc.co.uk 3 samples

Related samples 2

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_off00006985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6985 5480 bytes
SHA-256: b8f5c8008f85df1caa039dcdf97d301917d90e89d0e30e15cbd51a95d3e2f3c5
font_01_sfnt_off00007c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C15 10372 bytes
SHA-256: 55b5708f8182a181c9503295ac55af4cce138c1998c8a7b914343293af64be38

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