Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ab2d0162039bbeb…

MALICIOUS

PDF

47.9 KB Created: 2020-08-21 13:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e8a1e7fecaa6fa0129a4fda924b39ae SHA-1: 20f39554af35e4745e4189f6b5318d08459d8d76 SHA-256: 5ab2d0162039bbebdbb5500a11cb47974860079133c6710ae14f889b8eb39245
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=el+aleph+jorge+luis+borges+cuento+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=el+aleph+jorge+luis+borges+cuento+pdf
    • http://files.trulyyoulifecoaching.com/uploads/1/3/1/3/131383860/822301.pdf
    • http://files.kathyschrock.net/uploads/1/3/1/0/131070713/pozejanew.pdf
    • http://files.makwawamalawi.com/uploads/1/3/2/7/132740860/zuder.pdf
    • http://fonaj.jessicaslaymakerart.com/uploads/1/3/0/8/130874276/poxotojijutadilawim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/1430/6466/files/cinacalcet_davis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/e_filing_26as_form.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/case_3_3_marketing_to_the_bottom_of_the_pyramid.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/37222907112.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5319/4133/files/cerfa_vente_vhicule_occasion.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/pinaraxadanunogoja.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/agroforestry_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0439/1511/6696/files/centrally_sponsored_schemes.pdf
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/hebrew_alphabet_pronunciation.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/54746488729.pdf
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/63077298738.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a24.bin
59a82d897be795c176dfbe28231dfb4e00b73db708dac18d1f08b83d5e31cbca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A24 5592 bytes
font_01_sfnt_off00008d21.bin
fcbbc42eccf2c30eb1929996332813b756c857b5c02dd8989c25f66b4348437f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D21 10856 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.