Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e590ede8ff85d1f…

MALICIOUS

PDF

54.8 KB Created: 2020-09-08 04:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92d5d0544e53fe44953b4cb3dbe2ff13 SHA-1: f1367a5dcb981a8520667e63ceb79f146c039d6c SHA-256: 5e590ede8ff85d1f7e34c52408f67b807af4d7f0afda9b198d3c04d90ce60458
162 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.club'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. The presence of a 'download button' lure suggests a phishing or scam attempt, likely leading to further malicious content or malware download.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=aplikasi+bebasbayar+untuk+laptop
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0461/3809/7817/files/tinokiraribogefivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/boxepuwolofivoxukiperone.pdf
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/apple_error_code_9006.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/absceso_cerebral_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0429/4174/3263/files/81389736439.pdf
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/pdf_to_word_converter_i_love_online.pdf
    • https://cdn.shopify.com/s/files/1/0457/3698/4742/files/jingle_bells_song_free.pdf
    • https://static.usrfiles.com/ugd/0c41e7_2e09cc9a455b46d29bd51075a852fc9d.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_9464ce514e714f29ab51bef769bd6e3d.pdf
    • https://static.usrfiles.com/ugd/ac51ce_b04ded5370c94994bbb8035a2213babb.pdf
    • https://static.usrfiles.com/ugd/5ed537_4996c930af4f4b19ba1f8ecaa1432884.pdf
    • https://static.usrfiles.com/ugd/b8c837_5428e0bdcff242df9558c1964139c32d.pdf
    • https://static.usrfiles.com/ugd/9c8fb9_c167b0f9e56a4b20b2b81dace1b85865.pdf
    • https://static.usrfiles.com/ugd/e3c460_fb0ed8acb62d4078a53ab3fa8b8af730.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_off0000984a.bin
13ab3c80c26f5648164545847e68b3222987a2918956f2521a50469003c44c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984A 5108 bytes
font_01_sfnt_off0000a9bc.bin
534f494134e2be8c106af6b8267b492b401c353e63ff2274f70776d9d0b12354		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BC 10568 bytes

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