Malicious PDF — malware analysis report

Static analysis result for SHA-256 518e4580552f61bb…

MALICIOUS

PDF

58.5 KB Created: 2020-08-01 14:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10642dd7b4a3b8531b0af487b821a7a2 SHA-1: ce432e2022b33348985e26f93e584017484a2acf SHA-256: 518e4580552f61bb8a845d82821420346b9d2f8daac1bd0d0a7f004c208172d4
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious by a machine learning classifier and contains a critical heuristic firing for a malicious redirector link. The document body and extracted URLs indicate a lure related to 'lightroom key gen', which redirects to a known malicious domain. The presence of a link farm further supports the malicious intent.

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=lightroom+key+gen In PDF document text
    • http://files.cake-angels.co.uk/uploads/1/3/0/7/130775658/zisubifudid-muxisikap-pananimanowof.pdfIn PDF document text
    • http://files.manorfieldspark.org/uploads/1/3/0/7/130739132/lopalaziro_niguzuzaloja.pdfIn PDF document text
    • http://files.theagileapprentice.co.uk/uploads/1/3/1/3/131380354/xidefurarupotudi.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/1/0429/9964/4314/files/5e_saving_throws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/sasepazixepif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/51431837702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1141/3915/files/25130298521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2871/files/17484043772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/87189193765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4993/3208/files/vevif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/lufuzusoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/60324081452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/28139144725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7639/files/vuvog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/dejamemodudizok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7930/3317/files/44369286689.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000abc3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xABC3 27512 bytes
SHA-256: cc96a3282eb6032d8ddd8293d00b0d226fe24d4c3093d936a27f3966e9d3df04
font_00_sfnt_off00007796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7796 4788 bytes
SHA-256: 3395bc7eaa08431d9753f01c79b1abdb92f0c2022234dd24bab012153a7c3211
font_01_sfnt_off000087c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C4 10476 bytes
SHA-256: fb91cdffca48ae97c823cb9c7fece270c99d5d3956ca0b5fdb5d340ca2b6042c

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