Malicious PDF — malware analysis report

Static analysis result for SHA-256 b683afbe04775d33…

MALICIOUS

PDF

45.9 KB Created: 2020-08-20 04:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a61bed01ec4d9872d3f8dbb274b328d SHA-1: 7be4394b76f7490eff713b3b7d12ee7ea1fcac91 SHA-256: b683afbe04775d33c2644cbd5e143956b8c326c61d8fc6c0bbc5404ad10e9bf1
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as legitimate forms, such as 'Aetna biometric screening form 2018'. The primary malicious link directs users to a redirector URL, likely to obscure the final destination of a phishing or malware delivery attempt. The PDF structure and embedded links suggest a social engineering tactic to trick users into visiting malicious sites.

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=aetna+biometric+screening+form+2018 In PDF document text
    • http://fipezoxa.mpgwga.com/uploads/1/3/1/0/131070498/nerejopuxe.pdfIn PDF document text
    • http://lafaxi.elginhigh.co/uploads/1/3/2/6/132681352/juwagefusewozom_bolawukadati.pdfIn PDF document text
    • http://files.angeloflove.net/uploads/1/3/0/8/130874276/4745702.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/1/0432/3000/3355/files/faa_form_8610_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/mewavepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4120/1064/files/jewixagenudulibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/82202793434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/gusozetoroxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8339/7275/files/67588711592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/business_law_book_by_sushma_arora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/examples_of_organic_and_inorganic_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8353/0407/files/bobexulavovada.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C94 5820 bytes
SHA-256: 2241bf87b2398b790d16d8cf3843361e654a0a7fae9edb3c418f97e146828d3b
font_01_sfnt_off0000704a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704A 10792 bytes
SHA-256: e00eef1d8106b6a4bd308d885cd6ba954e178dc324729c461c6f9d2b96460155
font_02_sfnt_off0000952d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952D 16232 bytes
SHA-256: cb0239a5e77cb37740da0b4997a5f47117ed526887f952b298c44ef8b2f17e18

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