Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e16e521f84c6043…

MALICIOUS

PDF

175.5 KB Created: 2020-05-18 23:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 37b84847fd7fba41877ba56dd6165dd3 SHA-1: b318f30805c1ef64acead1690a92e66baac3ea87 SHA-256: 9e16e521f84c60430b76e72cc4c45c444d34d2994d45567635e335f8496f1cf5
76 Risk Score

Malware Insights

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

The ML classifier identified this PDF as malicious with high confidence. The document contains numerous embedded URLs, including one that appears to be a lure with obfuscated characters. No scripts were extracted, but the presence of multiple external links suggests a phishing or credential harvesting attempt. The document body itself is heavily obfuscated and appears to contain repeated URL patterns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9675

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://kingsloth.com/uploads/1/3/0/3/130324418/5776033.pdf In PDF document text
    • http://thepastors100.com/uploads/1/3/0/2/130288707/lirafazosuzo.pdfIn PDF document text
    • http://proindustrial.net/uploads/1/3/0/7/130739023/mofozararonafe.pdfIn PDF document text
    • http://aliciak4swva.com/uploads/1/3/0/6/130639678/ae9bb6b2b03b.pdfIn PDF document text
    • http://natinelflowerslinensandrentals.com/uploads/1/3/1/3/131398246/kurejijabibivo_mavajowel.pdfIn PDF document text
    • http://photoboothsofseattle.com/uploads/1/3/0/6/130605422/97d4bc382e23a.pdfIn PDF document text
    • http://budgetboater.com/uploads/1/3/1/1/131163786/dalif-zitokib.pdfIn PDF document text
    • http://realmconsultingnw.com/uploads/1/3/0/6/130621226/5755531.pdfIn PDF document text
    • http://skylarrubyy.com/uploads/1/3/0/8/130813514/ruvenuzawuvul-moken.pdfIn PDF document text
    • http://brighteyesoliver.com/uploads/1/3/1/6/131637034/lapebekogamiz.pdfIn PDF document text
    • http://gabrielzabala.com/uploads/1/3/0/5/130546153/8cb9a0bba.pdfIn PDF document text
    • http://earthspiritpress.com/uploads/1/3/0/4/130478057/130478057.html#%25EF%25BF%2590%25EF%25BE%25BF%25EF%25BF%2591%25EF%25BE%2580%25EF%25BF%2590%25EF%25BE%25B5%25EF%25BF%2590%25EF%25BE%25B4%25EF%25BF%2590%25EF%25BE%25B0%25EF%25BF%2591%25EF%25BE%2582%25EF%25BF%2590%25EF%25BE%25BE%25EF%25BF%2591%25EF%25BE%2580+228+%25EF%25BF%2590%25EF%25BE%25BF%25EF%25BF%2591%25EF%25BE%2580%25EF%25BF%2590%25EF%25BE%25BE%25EF%25BF%2591%25EF%25BE%2588%25EF%25BF%2590%25EF%25BE%25B8%25EF%25BF%2590%25EF%25BE%25B2%25EF%25BF%2590%25EF%25BE%25BA%25EF%25BF%2590In PDF document text
    • http://earthspiritpress.com/uploads/1/3/0/4/130478057/130478057.html#%25EF%25BF%2590%25EF%25BE%25BF%25EF%25BF%2591%25EF%25BE%2580%25EF%25BF%2590%25EF%25BE%25B5%25EF%25BF%2590%25EF%25BE%25B4%25EF%25BF%2590%25EF%25BE%25B0%25EF%25BF%2591%25EF%25BE%2582%25EF%25BF%2590%25EF%25BE%25BE%25EF%25BF%2591%25EF%25BE%2580+228+%25EF%25BF%2590%25EF%25BE%25BF%25EF%25BF%2591%25EF%25BE%2580%25EF%25BF%2590%25EF%25BE%25BE%25EF%25BF%2591%25EF%25BE%2588%25EF%25BF%2590%25EF%25BE%25B8%25EF%25BF%2590%25EF%25BE%25B2%25EF%PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000a2f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA2F1 113052 bytes
SHA-256: b77b33ed7732def2d2ea923b23717a9290145226fb3626f9dc92dcf6c5dcd05c
stream_006_off000264c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x264C6 34940 bytes
SHA-256: 5a4f112487615bae785f414712a80411d9b369e830398b55ff9cdbb322a4399e
font_01_sfnt_off0001e33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E33E 9052 bytes
SHA-256: 1721337e0b7ad78eaee3e89274e2a3d32ced6737d5d1a19149568496586c725f
font_02_sfnt_off0001f592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F592 1628 bytes
SHA-256: 96bf04533c7c72d19cadd53e180a5ef7327fd43b66309d9741b7a898a627da2b
font_03_sfnt_off0001fdc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FDC6 36568 bytes
SHA-256: 5e0ad2e8d75ef8017931a11df5338b079186be76589997b7d7f3fdad4908154b

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