Malicious PDF — malware analysis report

Static analysis result for SHA-256 afc0507c68e243f3…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 02:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7a247537955fb2ec9225dd5ee8c8050 SHA-1: 20a12fa02f00558358cd1f4fd01d96edc10291fc SHA-256: afc0507c68e243f3a7f8e23b8d3d279891ad817656ec2a92def41908687393fb
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though obfuscated, contains the malicious URL and appears to be a lure for traffic generation or SEO manipulation, aiming to redirect users to potentially harmful content.

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.ru/pify?keyword=batuque+lorenzo+fernandez+pdf In PDF document text
    • http://jobuzidu.hancbass-greaterswiss.com/uploads/1/3/1/4/131482952/lenijogadafotelatob.pdfIn PDF document text
    • http://files.windycityknittingguild.com/uploads/1/3/0/7/130775292/9997317.pdfIn PDF document text
    • http://files.littlestarzpreschool.com/uploads/1/3/0/7/130776200/dozobamutu-sosobubigig.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/1/0427/6387/8566/files/tigijoxamobaradug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/jikan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/7979585509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3490/0637/files/jobaxogazazipujemev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/paulo_coelho_aleph_romana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3851/files/anthropology_syllabus_for_wbcs_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8534/8508/files/genetic_algorithm_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8773/files/norazugowolof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/pojabege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/24105136402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4904/9494/files/bonfiglioli_planetary_gearbox.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_off000065b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 5084 bytes
SHA-256: 20d9faacd6f8cc82d8e12a89aaf6a3501dab3102f409726527886d1b26a33cbd
font_01_sfnt_off00007719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7719 10452 bytes
SHA-256: 612bcdf0992e0b9f5be65d55831e44112944c99b401a2dff8ff472447efd047d

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