Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e443cb020f78015…

MALICIOUS

PDF

49.5 KB Created: 2020-08-22 17:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1af487ddb09f88c66cd6fc3188ab5879 SHA-1: f997927e50f51a24af8b3125e9b1f83a3455322f SHA-256: 8e443cb020f7801577520bc9f673557b520acfa41b306aca41e51b88fc18a03f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm designed to lure users by offering a 'free admin template'. The primary link, https://ttraff.cc/pify?keyword=free+admin+template+angular+7, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the lure and the redirector URL. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to a SEO poisoning or link farm tactic.

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=free+admin+template+angular+7
    • http://files.bondybluereview.com/uploads/1/3/0/8/130874122/jalokibo.pdf
    • http://wawezase.furmansleeplab.com/uploads/1/3/1/0/131070786/xuzevigexabi-babebuk-jetukifesubade.pdf
    • http://files.trevorroachdp.com/uploads/1/3/0/7/130739578/pumikexuxa.pdf
    • http://povomome.tkcreations101.com/uploads/1/3/1/6/131607600/58da3fb2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/jodagizo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/fekepokiwuvosevab.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/47663984181.pdf
    • https://cdn.shopify.com/s/files/1/0451/3693/7125/files/list_of_2000s_anime.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/20331586775.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/safosarujesetef.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/kerala_beef_recipes_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10699911966.pdf
    • https://cdn.shopify.com/s/files/1/0428/6090/4615/files/58901809237.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/20718286905.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/tatewerurora.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082b6.bin
d01d7ea387d279d809b85af02a1787688ce18be3c93b726ff777f1513c2461ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B6 5136 bytes
font_01_sfnt_off0000941f.bin
2b77f81284ccb177f790d9cc60436b49bda4ebcdf4de5fb975712e943bc20a48
pdf-font-stream PDF embedded font (sfnt) at offset 0x941F 10888 bytes