Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d4d575e3e5db06…

MALICIOUS

PDF

35.6 KB Created: 2020-08-28 00:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 81dad1f4fb535c06a9f7b52b5fd1f3e5 SHA-1: a3bf44c651f968b8a819521d7fe6684599087c8d SHA-256: 56d4d575e3e5db06d23fcb436c898ed346ca032e28bd09e5ff94aa4b7548c573
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=imprimir+regla+de+papel'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. 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.com/pify?keyword=imprimir+regla+de+papel In PDF document text
    • http://files.lightofchristgarden.org/uploads/1/3/1/6/131637953/9c4d074fd2f40.pdfIn PDF document text
    • http://papepij.jae-k.com/uploads/1/3/0/7/130738970/1579294.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/1/0429/2280/3366/files/bifazezuziverelonunemofak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/53823264699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/77393554508.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/barreras_de_la_comunicacion_psicologicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/buck_converter_input_current_waveform.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/vulikinovonepunujurivew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/63676415302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2465/7056/files/arduino_c_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/jasusadijine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/88560431286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/milefoke.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_off00004c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4A 5036 bytes
SHA-256: 408f79b2935640fca9abb6623ead078c7e817fb8f52eea9d8a151aee093b12ad
font_01_sfnt_off00005d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4D 11220 bytes
SHA-256: 63eee79ce4346a79f3f5f23a0a4645e187b54d62612a04b5d1d76c4e0f5da711

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