Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f046f3676f3fe8…

MALICIOUS

PDF

60.5 KB Created: 2020-08-06 18:47:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f88be54d0ac03efe6e245e0a367a15e SHA-1: fcda6c5b7581fd78d70a2b5c73509fbb8ecab1ab SHA-256: 57f046f3676f3fe8dc13af428a26a31989609450a397ede350f0fc0a87cdb0d6
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 external resources, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. This suggests a lure to a malicious site, potentially for credential harvesting or malware delivery.

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=calidad+de+vida+en+mexico+pdf In PDF document text
    • http://files.ponyselectbaseball.org/uploads/1/3/2/3/132303170/sesobera_xobiju_nixefuzotezop.pdfIn PDF document text
    • http://netit.anthamation.com/uploads/1/3/0/8/130813765/tafejejefazenoj.pdfIn PDF document text
    • http://files.artofyaky.com/uploads/1/3/2/7/132712011/kowimafugekunew.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/1/0433/5271/9515/files/unix_shell_script_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2995/2674/files/97603932622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tifomev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8748/7385/files/59702570023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/83833469529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4914/8828/files/74635742163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/rukojudagiwusixisumoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/ramujepunower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/26001510787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0798/files/27187883322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/83583068491.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 6

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_off0000ad5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD5B 5060 bytes
SHA-256: 6aaf142af9fea59142b25b8f42bf1d65dc6a2b3f279424b38748f3fd8773c734
font_01_sfnt_off0000be8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE8F 11416 bytes
SHA-256: 828e8d2747e6317196529810745421d89eb5ac39464b6b863ef9204798f0ffce

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