Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b1a31aa6405777…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 19:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a296987ce345a4071e45a742e56b707e SHA-1: 350ba4e23abb07284e3307100a1c64b691baf31c SHA-256: 53b1a31aa6405777fcc9d69ed1f55802bd115555daa86d52cff8cfab27258bfe
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the text "Story map printable pdf" and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=story+map+printable+pdf In PDF document text
    • http://files.patriotsshoalwaterbay.com/uploads/1/3/1/1/131164132/ebad5f29.pdfIn PDF document text
    • http://lovek.opmetoc.com/uploads/1/3/2/7/132710621/2611d7f041.pdfIn PDF document text
    • http://files.strichardschichester.co.uk/uploads/1/3/1/1/131164033/7622363.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/1/0434/9162/3074/files/23667896134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/science_laboratory_apparatus_and_their_uses_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/auto_tune_efx_3_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/golijikabijopejepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6550/8002/files/kenujanomejuvodor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8741/9806/files/41797917544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/vazizubutivexamet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/popiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/moboxuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9900/5863/files/concone_trumpet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9102/5303/files/guponovisisew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/67103833549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1325/files/82603487804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/44331996461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7082/files/luketazovenam.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 3

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_off00006a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6A 5352 bytes
SHA-256: 703acfeb2c18f35d4d94297e62bed77a59459e68649a165ecfcb4454cee3b9fd
font_01_sfnt_off00007c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10352 bytes
SHA-256: 3da520f02fb130aadb162d03a76db8590cd0c6f4d35192533bb7c81f44263e24

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