Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a5d3fc9e730fd3…

MALICIOUS

PDF

55.9 KB Created: 2020-08-04 18:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae3db86ac328381ad3e0322b6e3689b6 SHA-1: 49da4e9242014d9eaf9982a828ffec4c7901364d SHA-256: f5a5d3fc9e730fd3e271e01918da744e25de0f9980149bcd2dc5b2609f9f6e07
202 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, forming a link farm. One of these links, 'https://ttraff.com/pify?keyword=aseptic+technique+pdf', is identified as a malicious redirector. The document body contains garbled text, but the presence of the malicious redirector and the link farm structure suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aseptic+technique+pdf In PDF document text
    • http://files.lynnebarrett.com/uploads/1/3/2/6/132695874/6711400.pdfIn PDF document text
    • http://files.flowartspace.com/uploads/1/3/1/4/131453397/7988067.pdfIn PDF document text
    • http://files.hahnselectrical.com/uploads/1/3/1/4/131407968/8e826.pdfIn PDF document text
    • http://files.wingsdance.com/uploads/1/3/2/6/132681634/matopirabotu-tarebudemegixad-segekajelaluro-nogosunimiwag.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/1/0428/5949/5590/files/2368716242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/lanif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/pimedegoseju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/zarifarokem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7181/5331/files/tumulamok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/vavagodatozibegimivixod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9842/1913/files/the_wealthy_barber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/9732821821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9232/7077/files/nakamichi_av_10_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/fojawurorut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9628/0993/files/json_to_xml_java.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 8

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_off00009d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D1D 5020 bytes
SHA-256: a18bc8bc88c2abb408ed820fa21fd858f54693938bdc2b8ac2c55cd0005ed995
font_01_sfnt_off0000ae35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE35 10656 bytes
SHA-256: 24932e9135852b618bc8acd17eb35234de8f28428af78c4b11b2c76906d075c6

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