Malicious PDF — malware analysis report

Static analysis result for SHA-256 60132c1d3f5b5d73…

MALICIOUS

PDF

49.8 KB Created: 2020-07-22 20:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: e58f124ac2d9a4eeb0a10e74317f992e SHA-1: 1193d1b1cd71fec17adcf2f2c981c1fa44384790 SHA-256: 60132c1d3f5b5d739b4d44bbaf4e0a54a098b12074dcf67ae8531a3c2b84c232
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, suggests a lure related to a 'business plan example'. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to harmful content.

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=business%20plan%20example%20pdf%20francais In PDF document text
    • http://files.tiltedhaggissoap.com/uploads/1/3/1/1/131163853/6316354b4.pdfIn PDF document text
    • http://files.lucyhollidgedesign.com/uploads/1/3/0/7/130775392/pumokuva_zavusiwenabado_lerunusewed.pdfIn PDF document text
    • http://files.samalaghoshcreations.com/uploads/1/3/1/3/131380836/mebubarud.pdfIn PDF document text
    • http://files.vivagreb.com/uploads/1/3/1/6/131637034/kimab-sugala.pdfIn PDF document text
    • http://files.craftyjoe.com/uploads/1/3/2/7/132741181/80e89806a5104ae.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/1/0433/0687/7080/files/bopeberovejaxurid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wotedosepano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/nozixexapovor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/25905565577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/nejobiramumepokavijiba.pdfIn PDF document text
    • https://jomasolif.files.wordpress.com/2020/07/30818229096.pdfIn PDF document text
    • https://mosutag880995420.files.wordpress.com/2020/07/45201595109.pdfIn PDF document text
    • https://savevawat.files.wordpress.com/2020/07/xoretulujiliwusunesizeraz.pdfIn PDF document text
    • https://gonaburezi.files.wordpress.com/2020/06/8280947881.pdfIn PDF document text
    • https://beluxubaw.files.wordpress.com/2020/06/vuziduwovamosuxuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/90461660749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/73275885568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/83674147978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/89857465167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D7 5108 bytes
SHA-256: 9a30295c4ae212dc4e8ccec2c040d01cbca223812cc5045e81ee07d16f79c0ad
font_01_sfnt_off00009313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9313 11792 bytes
SHA-256: 911dd1dabb934123c3f647da4dddf8741b9bb641295c39cb027cd310bea86897