Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e541494be0d769…

MALICIOUS

PDF

48.2 KB Created: 2020-07-31 05:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c959b79f17e94982494f8ed3143f91e SHA-1: 71c389f3f584ff8f51e8b14ba152493d639b300b SHA-256: 76e541494be0d769841fe4ecca50f4215b70e52ed640f45715487804099a1810
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical finding of a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure for '5 canciones faciles para guitarra pdf'. The primary IOC is the redirector URL, which is likely used to serve a second-stage payload or phish for credentials.

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.cc/pify?keyword=5+canciones+faciles+para+guitarra+pdf In PDF document text
    • http://files.thornappleplayers.org/uploads/1/3/2/6/132696506/5229272.pdfIn PDF document text
    • http://files.flametreemalawi.com/uploads/1/3/2/6/132680932/denekipote.pdfIn PDF document text
    • http://files.longbeachjunkremoval.org/uploads/1/3/0/7/130740504/751102.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/1/0430/9227/9460/files/12088304632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/kosupajakikixusesep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/bivakede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/16861162882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/madulufapijedajetanixak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6948/8798/files/jovapaberusupikomokamira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/rulixaxenojufugomosafura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/78513994524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3720/2344/files/jifiwuwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/83349555925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9666/files/runone.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724D 5236 bytes
SHA-256: a13f777d69a8d0514413a274409526fd4cdd5155e5a1a3809a960b03f5add714
font_01_sfnt_off00008411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8411 1888 bytes
SHA-256: 7ef6cb6698fea806eec66effba9ae77859a8e18c03169e66e212b1421c87ab72
font_02_sfnt_off00008d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 11144 bytes
SHA-256: cf5a10f65c41ef812cf35fb003fe35fe05c331886e9eff1f82ebf3a6c8a6f058

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