Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2ec7cd046629fe…

MALICIOUS

PDF

59.7 KB Created: 2020-08-23 03:49:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13e3113f364cdf09209fdd8d4f99ad75 SHA-1: ae1ef088154b776821aedceb4b667c1663548949 SHA-256: 7e2ec7cd046629fe4021b045038510cc3d7cd2e7d316c9fb892f5587eb2b1ad3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though partially obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=saira+narasimha+reddy+trailer', which is flagged as a malicious redirector. The presence of numerous links suggests an attempt to distribute malicious content or phish users, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=saira+narasimha+reddy+trailer
    • http://razuzoz.icemtn.com/uploads/1/3/1/6/131607600/6f7d9e8e05def3e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/basilea_2.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/midufodasolofuderugonu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2990/6079/files/naxesorewukugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/ruxatofe.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/german_shepherd_dog_image.pdf
    • https://cdn.shopify.com/s/files/1/0435/6256/5795/files/6362944484.pdf
    • https://cdn.shopify.com/s/files/1/0435/4437/9551/files/al_quran_ul_kareem_free_download.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009434.bin
ffea1289ee2066c4a018be019744c18f72cc522ac37369bfc0380b2d80d04c51
pdf-font-stream PDF embedded font (sfnt) at offset 0x9434 5272 bytes
font_01_sfnt_off0000a5ec.bin
323bcc979f780fa4f608cfd6b8b9745a6ed8225559a7e7e39c83f8f500cbe04e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5EC 11312 bytes
font_02_sfnt_off0000cc57.bin
b6164308e7efb72a2712263eb756fe39baf373ae1259b507f6d82df98c3c2631
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC57 16336 bytes