Malicious PDF — malware analysis report

Static analysis result for SHA-256 4800c0419a2ba8e2…

MALICIOUS

PDF

45.9 KB Created: 2020-08-07 02:12:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6db46ba46dbd7891ba4a4e3e6bcdc0e SHA-1: 04fbc93eb93725eda7c674f48ad76c39691c0cbd SHA-256: 4800c0419a2ba8e27ced69d14fcd72d12b963ba8e8fb68ff65614023548951a0
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.ru/pify?keyword=makalah+standar+akuntansi+sektor+publik+pdf`. This URL is embedded within the document body, disguised as a link to an accounting standards PDF. The presence of a large number of external PDF links, many hosted on Shopify, further suggests a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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=makalah+standar+akuntansi+sektor+publik+pdf In PDF document text
    • http://files.maggiewatkinsdoula.com/uploads/1/3/1/0/131070588/1978281.pdfIn PDF document text
    • http://files.kcsaussies.com/uploads/1/3/1/6/131606035/4790224.pdfIn PDF document text
    • http://files.inspiredlearninglab.org/uploads/1/3/1/4/131437172/7144681.pdfIn PDF document text
    • http://files.taylormadebling.com/uploads/1/3/1/4/131437978/nurasiborurebanajupu.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/1/0429/6271/4773/files/28458134147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/serie_a_calendario_junho_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13534048661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/2007_toyota_tacoma_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/rasutuwufuzuloto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/british_admiralty_chart_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3576/1576/files/intex_ultra_frame_pool_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kijajakunij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2091/0746/files/xarusuwisodej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/71343204949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5164/6119/files/concatenating_files_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/importance_of_revenue_management_in_hotel_industry.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_off000076aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AA 5340 bytes
SHA-256: 8b5ab894c63071d9912143b4be461cd7e8545d06d7bb2d4ccf38698a5b2e6c68
font_01_sfnt_off000088cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88CC 9916 bytes
SHA-256: 985992086c424a0926664cd0fde8d86424c9cd3c591944d64466f6677c9a4ec9

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