Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5b7d1d34ba8d37…

MALICIOUS

PDF

48.2 KB Created: 2020-08-08 03:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4eacff21415c16a59083f968c3744d85 SHA-1: 23849300d0d55d7476e2f0dcba01f0b6034c7ba1 SHA-256: fc5b7d1d34ba8d37ec07310083dffe913110448957c13da8694d28fa8e281f0f
234 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=phenomenological+approach+qualitative+research+pdf, which is likely used to lure the user to a malicious site. The document also contains a large number of external PDF links, suggesting a link farm or SEO poisoning tactic. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=phenomenological+approach+qualitative+research+pdf In PDF document text
    • http://files.doggiedoodlesbydina.com/uploads/1/3/2/8/132815748/padibusobipe_zaxulax.pdfIn PDF document text
    • http://files.chrisstruykbonn.com/uploads/1/3/1/3/131398214/8231315.pdfIn PDF document text
    • http://files.kofcwhitman.com/uploads/1/3/2/6/132682989/dd78a7e6.pdfIn PDF document text
    • http://fulej.genewhitacrecpa.com/uploads/1/3/2/3/132302939/9152a1eda5de.pdfIn PDF document text
    • http://files.citizensforenvironmentalstewardship.org/uploads/1/3/0/7/130739415/dedunigoxajim.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/1/0433/9489/1943/files/tapujanabibowumuwuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/78577988634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3393/4496/files/20946333536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/33419810873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/cervical_spine_radiculopathy_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/30392672240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/physics_constants_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8374/9781/files/white_rodgers_thermostat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/wogadanezadopipedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/gaxosevaniwunelovimemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8590/3510/files/as_1594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/benilenigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7420/8415/files/mugoxal.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B86 5756 bytes
SHA-256: 334ed827d9a32ae6d6c3122c776896574576b45f663a419334caab53ea787bb9
font_01_sfnt_off00008ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF4 10780 bytes
SHA-256: a12d4edbf9e45587804e3fed668f536517dd78e1284eb2b420f05217390fae20