Malicious PDF — malware analysis report

Static analysis result for SHA-256 17174d4673d52aa4…

MALICIOUS

PDF

56.7 KB Created: 2020-08-27 19:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a40b75cab2e79ba6e0a3eea087d8151 SHA-1: a448d64b558a2f6ce2f12a40c463d472b18149ee SHA-256: 17174d4673d52aa4335870cede8b0b6553c1f2001dda88019fe545dfd19dc17b
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=al+quran+30+juz+dan+terjemahan+bahasa+indonesia+pdf', is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitates the attack.

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=al+quran+30+juz+dan+terjemahan+bahasa+indonesia+pdf
    • http://tumov.gottahavethisllc.com/uploads/1/3/1/4/131482952/1585157.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/37285287799.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/bumaro.pdf
    • https://cdn.shopify.com/s/files/1/0451/8104/2839/files/libes_marine_biogeochemistry.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/59020781606.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/39950081492.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/retuturujedip.pdf
    • https://cdn.shopify.com/s/files/1/0430/0475/6121/files/ravi_prakash_name_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/nulupidojebijotari.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/migujivedipotowaxire.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/tomcat_server_for_eclipse_oxygen.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/rawotumegesabitemo.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000a2fb.bin
57937eccad18887558bdc5943c3c5f5516e3eb958aa64b4fa8801b6e26e4a131		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA2FB 27964 bytes
font_00_sfnt_off000066f5.bin
f55b4c428fbdb0a17c6291a1f69ef8e92732710198eeea28aef1b50d9d221c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 5968 bytes
font_01_sfnt_off00007b17.bin
6d2bbecb9dc9ad4ea4fce739e849fa7b2c751ca88ce8263a1a63a7306b30a42b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B17 12716 bytes

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