Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6502b975d865535…

MALICIOUS

PDF

38.9 KB Created: 2020-11-01 11:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 261db8fe4ff46fe8a7fa56c473b4a9b3 SHA-1: 966c04ad4e03be3264705485a907f2057786cece SHA-256: a6502b975d865535fa639ae9a26e02ba0a99d7cf9d4c8882955e5233a34c79ab
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign resources, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, also contains this malicious URL, suggesting an attempt to lure the user to malicious infrastructure. No scripts were extracted, but the presence of numerous links and the malicious redirector indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/123?keyword=alchemist+guild+location+ffxiv In PDF document text
    • https://xaxexapiro.weebly.com/uploads/1/3/1/4/131453807/gatajizoruxaze.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/molivu.pdfIn PDF document text
    • https://kosigejobawazi.weebly.com/uploads/1/3/4/3/134315380/9308812.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f872dc3c4927.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/1/0500/3958/6967/files/complete_phrasal_verbs_list_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/33676527708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdb898de-854c-4be6-8f60-f7504e533207/69233318177.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/wuwaxusejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6683/4087/files/28481572583.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/edit_file_mac_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8887/0059/files/57617412552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0653/2033/files/banemevuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c2ad0d-3a96-4a40-85dc-765de9e23643/garden_tiger_moth_caterpillar_diet.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/geeksforgeeks_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8855/9293/files/80341922516.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_off000056a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56A4 5456 bytes
SHA-256: e5a6884248bd64e1243a89cab8764cb38449f4f1f3529c8f2f9b3c1e2c065224
font_01_sfnt_off0000691a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691A 11080 bytes
SHA-256: 827d47f120ed4e61d4fb3dba0376d5351d84243a12fb8935224fd946be519927

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