Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc62913e55ff9236…

MALICIOUS

PDF

57.4 KB Created: 2020-08-24 10:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b087a7910aa86f9e79b0b43ea1eb433f SHA-1: 93a7e92f243eb14f144fcea69a43e1d33b8e3ea2 SHA-256: fc62913e55ff9236eb9b645bd017f0cade8f3f02d48d24e4c80270e2229a9b25
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=email+format+check+html'. Additionally, it exhibits a PDF link farm with numerous external PDF links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for an email format check.

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=email+format+check+html In PDF document text
    • http://files.nw-churchofchrist.com/uploads/1/3/2/7/132711999/c2492.pdfIn PDF document text
    • http://begupu.newwoodturners.org/uploads/1/3/2/7/132740267/zoboregekalamojaba.pdfIn PDF document text
    • http://bidoge.victoriaseo.org/uploads/1/3/1/3/131383388/d8f285e6bc0fc.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/1/0448/3383/3122/files/audio_visual_media_in_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9116/5333/files/aphthous_ulcers_nice_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0406/6967/files/nuvodujowitozudeputuwuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/sonuxokubugufifezipimilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/liwapojimujovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/43987186476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/adobe_acrobat_dc_per_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3773/6608/files/4066206166.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_off000097e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E3 4964 bytes
SHA-256: 02521c31c5f88b654b19855c0d0c0b0c517b3162f5a4f1d75574cdf1d230b2a1
font_01_sfnt_off0000a8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8A2 15336 bytes
SHA-256: ab47c1cbbc3d7cf49020836685bdec405dbecffef8803b5265cfafea85f89cc5

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