Malicious PDF — malware analysis report

Static analysis result for SHA-256 700662f7a84a6890…

MALICIOUS

PDF

60.7 KB Created: 2020-08-22 20:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d88b4a94a9b64d262f4719bf9c4801fb SHA-1: 107fb9678db37cb0ef9011708b5c011350575b16 SHA-256: 700662f7a84a689086e33878f77956bef23ef343f51e3ae71cbacb280a61ef98
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure for a movie download, which is a common social engineering tactic. The presence of numerous external PDF links also suggests a link farm for SEO manipulation, potentially to host malicious content.

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.ru/pify?keyword=ambarsariya+full+movie++in+720p
    • http://josetodil.manyasonemao.com/uploads/1/3/1/3/131383483/8280137.pdf
    • http://files.lucylordauthor.com/uploads/1/3/0/7/130775393/070fdcb9.pdf
    • http://files.xlilaw.com/uploads/1/3/2/6/132682685/ae0036215.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3495/9256/files/sanixiloporomilegidofaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/82196483167.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/84369177340.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/pofenu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/lan_topology.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/33856087876.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9741/files/smiley_face_text_symbol_copy_and_paste.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/7130476993.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/xekip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/togoporilofezadelusibom.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_off0000a943.bin
4d59ecc38e686155c5decc735b7ae42ab0fb9e51234a3c9e0fb8b590ff548a7a
pdf-font-stream PDF embedded font (sfnt) at offset 0xA943 5692 bytes
font_01_sfnt_off0000bc9b.bin
dce1062c3c38bc57a5600703fa05bb0450afbb168da7e2f468187c538d136c2e
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC9B 12804 bytes