Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffdd23480735f0c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 11:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23e5f69dd0d3becc216199dccf2fb0d2 SHA-1: 2bc8d1428ed351fda44c0b2eb0012387becf2d57 SHA-256: 0ffdd23480735f0cbbe7dc36d689be2c23afdac0fb44e64c53eef47c90a74327
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to mimic legitimate content. The primary redirector URL, https://ttraff.cc/pify?keyword=robotica+pdf+gratis, is flagged as malicious and is used to funnel users towards potentially harmful content. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt leveraging SEO tactics.

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=robotica+pdf+gratis In PDF document text
    • http://files.carrerastacos.com/uploads/1/3/0/7/130775690/jazoperidogavifafaso.pdfIn PDF document text
    • http://files.coolmountainkids.com/uploads/1/3/0/7/130739076/gerufu-difegusare-sarulusezazu.pdfIn PDF document text
    • http://files.myearlylearningbox.com/uploads/1/3/0/8/130814115/2035034.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3083/0494/files/93663464436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/30115162172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/13549696753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/7715946286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7362/6524/files/gafawazufefisamumawid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/pejanesorusegujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/13733690040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0812/1242/files/20539237769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/native_american_culture_and_traditions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/39254410904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/1302916049.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
🗂 Part of campaign: carrerastacos.com 4 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6506 5000 bytes
SHA-256: fe2edbf6f30561601c9f172272b5274367db198d57005b254af71bc7efa9b15a
font_01_sfnt_off0000760f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760F 10512 bytes
SHA-256: 537d68f600464ffa7693dc047a158e5b426494f95926ab5ce40422be063e1ea3
font_02_sfnt_off000099ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BA 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f