Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ec7706e852866f…

MALICIOUS

PDF

47.6 KB Created: 2020-07-31 09:07:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d8d8d84517a090786bc4e49caa17ef1 SHA-1: 38dbbd560066ee27def8cc115c5a4ecc5e889e01 SHA-256: 56ec7706e852866f0b437097a5350c69bf77c61b1a834d265d66f2cf32774720
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly indicates maliciousness. The document appears to be a lure, using the text 'Cuentas del balance general pdf' to entice clicks on the embedded malicious URL. The presence of numerous other Shopify links suggests a link farm or SEO manipulation tactic.

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=cuentas+del+balance+general+pdf In PDF document text
    • http://files.edistoislandyouthrec.org/uploads/1/3/1/3/131380467/manikoropomume.pdfIn PDF document text
    • http://files.brothersinthewild.com/uploads/1/3/0/7/130739802/lokewavudukodig.pdfIn PDF document text
    • http://files.sweetpsalm.com/uploads/1/3/0/8/130874115/84d336fbc2bd3.pdfIn PDF document text
    • http://files.lightningkali.com/uploads/1/3/0/8/130873851/suniviwutajisa.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/1/0428/9753/9231/files/236817867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/38760081658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/63047692882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/69561591069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/dozozotipukutad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/69166134162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/45931161842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7451/9194/files/2776589471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0424/7715/files/depoberaximurabajawitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/53764730929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/23128739895.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_off00007de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE7 5208 bytes
SHA-256: 6a687e251ecd4efbf7c09d952af2c8b29f4af99de2808c32c99249d2242b11eb
font_01_sfnt_off00008fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA2 9900 bytes
SHA-256: b3c2b788e831512773f1adfadee41b3f6e892119a97fc1cad0684d3195060dc5

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