Malicious PDF — malware analysis report

Static analysis result for SHA-256 218c3c8b389475b2…

MALICIOUS

PDF

44.2 KB Created: 2020-07-17 16:53:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 389774ff5ff08e5dcdd5cf8b9f83b4ee SHA-1: 909e8841d894b424d28aa902bda35d786af33ba6 SHA-256: 218c3c8b389475b21315a9f36853c163b8b21d2348b849bb359214cb27d7982f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a high number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to be a lure related to '12 fruits of the holy spirit and their meanings pdf', likely to entice clicks on the malicious link.

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.com/wb?keyword=12%20fruits%20of%20the%20holy%20spirit%20and%20their%20meanings%20pdf In PDF document text
    • http://files.bestoftimeswatch.com/uploads/1/3/1/3/131379749/e4facd24be.pdfIn PDF document text
    • http://files.kuhl-therapies.com/uploads/1/3/1/4/131437308/zolebapukor_wasevewe.pdfIn PDF document text
    • http://files.holytrinitylowmoor.com/uploads/1/3/1/3/131398369/7433288.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nemakove.files.wordpress.com/2020/07/77983310017.pdfIn PDF document text
    • https://bazazexa.files.wordpress.com/2020/07/4958547107.pdfIn PDF document text
    • https://nonegek.files.wordpress.com/2020/06/fixus.pdfIn PDF document text
    • https://norefutax.files.wordpress.com/2020/07/24487722183.pdfIn PDF document text
    • https://mokakofes.files.wordpress.com/2020/06/wisegijexukew.pdfIn PDF document text
    • https://gokidomaj.files.wordpress.com/2020/06/riguwaxeniferu.pdfIn PDF document text
    • https://zogijag.files.wordpress.com/2020/06/51067147287.pdfIn PDF document text
    • https://rexakufemuv.files.wordpress.com/2020/06/20828922724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/29433267373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/79169566558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/8259226897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/35718054694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/15206360242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6825/files/52523304030.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_off00006f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 5528 bytes
SHA-256: c0427a4f4613c6ac142912c7d220d15e155d6dea225a5f45c98af45e6eb414e4
font_01_sfnt_off000081ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81ED 9860 bytes
SHA-256: e43d71b5346d5825e077633dc394a8d17128eec020cfed7a946fbcdcf1431c86

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