Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f959cb6312b3518…

MALICIOUS

PDF

73.5 KB Created: 2020-08-16 23:30:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b592d1a7dc2721e2ba77f5d3825b2439 SHA-1: e53555341041c22b2631eecc86772bbbcc1a1754 SHA-256: 7f959cb6312b3518efa0a38313119f1cb21e8bbc247ad42bd8de895247c0f8ab
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a malicious redirector infrastructure. The document body, although heavily obfuscated, contains a URL that is also flagged as a malicious redirector. The presence of a clipboard command lure suggests an attempt to trick the user into executing commands, likely to download and execute a second-stage payload.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=start+android+emulator+without+starting+android+studio In PDF document text
    • http://biriwuner.buschgeotech.com/uploads/1/3/0/7/130775162/2291460.pdfIn PDF document text
    • http://dixizipi.ladderbird.com/uploads/1/3/2/6/132681352/1971852.pdfIn PDF document text
    • http://files.hotrodhenrys.com/uploads/1/3/1/8/131856276/a0b6c900e9a0e88.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/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/gidonogetapojiwikisijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/adolescent_depression_screening.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/michigan_board_of_canvassers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/weretapegoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/xofixapuvovisowuzitubol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8671/4782/files/infamous_second_son_paper_trail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3296/files/93824403730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/36241078600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3277/1750/files/59554053541.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC978 5432 bytes
SHA-256: 7336c58753eeb3d03a4c11f5437bff62c93faa192df9daad062e954703169307
font_01_sfnt_off0000dbc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC8 11388 bytes
SHA-256: de9a278a1148bda4297b02ad62589f1317eb5b757776e61c090b68f04b72af33
font_02_sfnt_off000102a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A6 16388 bytes
SHA-256: 534e44c921e8acb9c8e993207df297c85ca6c672af4c6174c05b3ca24a170572