Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abbb6b003da3a9b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 11:45:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 962e17598a8f5ed4d2a48cb7f53aa553 SHA-1: 2cfca4195564745408eeb085b702476bfc08e577 SHA-256: 0abbb6b003da3a9bc7634281289e9d395d8d1f33333e95a47928aeb1098c7355
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to learning English, which is then linked to a redirector. This indicates an attempt to lead the user to malicious content, likely for phishing or malware distribution.

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/wb?keyword=como%20aprender%20ingles%20basico%20pdf In PDF document text
    • http://files.reachub.org/uploads/1/3/1/0/131071043/lipekodotidifosexugi.pdfIn PDF document text
    • http://files.thevillageshala.com/uploads/1/3/0/9/130969915/c9588dc736dd7c1.pdfIn PDF document text
    • http://basor.purpleheartracing.org/uploads/1/3/1/4/131437778/senuxikosifosa_wasoz_lumukiferulejez_xosewogo.pdfIn PDF document text
    • http://files.janegraceart.com/uploads/1/3/1/4/131438353/5367766.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/1/0439/0486/0328/files/mythical_creatures_mod_1._8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/mekokujuvuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/59368447654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8765/8150/files/42261520704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/redomajosojif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3188/8035/files/85482836910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/bozotogubekagozim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4012/0733/files/1936051356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3034/7938/files/14366101168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3770/files/shipping_up_to_boston_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/xefan.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 4

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_off00005f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 5520 bytes
SHA-256: 50b2942b29067e4ad4da31037485f47362a131b48934ad100daccdd25965740a
font_01_sfnt_off00007207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7207 12488 bytes
SHA-256: 05f9c6873981e872491fb8df5fe63fa88c5222b7dde9853fb8ebf8f51ab7d0b4

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