Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d392b7a092aebe…

MALICIOUS

PDF

44.5 KB Created: 2020-08-23 10:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 013dba52e4050409d616705e2cee4dcc SHA-1: 63ce46faf2fda13bb81371398e5c17c0230f4032 SHA-256: 62d392b7a092aebef45f284c9b809b8ccef8348ae98378b2ce74d2a673c3cbc1
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Abba gold dancing queen', likely intended to entice clicks on the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=abba+gold+dancing+queen
    • http://jomesola.atlanticbeachestatesny.com/uploads/1/3/1/1/131164462/zufemanupa-matipivuteku-fisumip.pdf
    • http://files.daedalusinnovation.com/uploads/1/3/2/6/132681501/717457e1e0.pdf
    • http://files.jazzlegaspi.com/uploads/1/3/1/4/131452735/3307c7392784b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/9521/2697/files/vodebe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/resozelofik.pdf
    • https://cdn.shopify.com/s/files/1/0428/6093/7382/files/89429512298.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/73141245080.pdf
    • https://cdn.shopify.com/s/files/1/0431/3700/7778/files/panufimifajefuvu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/jifepajetoxabelabemaninij.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/gutuzeditozuvew.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/85136286890.pdf
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/tujanawinud.pdf
    • https://cdn.shopify.com/s/files/1/0441/4459/1000/files/97170507048.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/bombay_priyudu_movie_video_songs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006397.bin
15b76253cb0981691367f57f41a328eb0eed1a48ec44e27950c7a9a161e0e9e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 4888 bytes
font_01_sfnt_off00007427.bin
cce4cd60e2ae246f27ec5981048416f6c325eecd893029832a9b426cf76461eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7427 10332 bytes
font_02_sfnt_off00009758.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9758 4324 bytes