Malicious PDF — malware analysis report

Static analysis result for SHA-256 59b815d424a976de…

MALICIOUS

PDF

167.2 KB Created: 2020-07-21 14:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f413f6d59645a3d600c337e5414ed704 SHA-1: d3f9bb673616e887636ff34712ed4af0b9dfece3 SHA-256: 59b815d424a976deeb103b1141e310bc7f09a9574427ee84d0a942d507c495f9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. The redirector URL is `https://ttraff.cc/pify?keyword=apotheosis+of+a+demon+pdf`. This suggests the document is designed to lure users to a malicious website. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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=apotheosis+of+a+demon+pdf
    • http://files.sauer-int.com/uploads/1/3/1/4/131438180/b91cff36838c89.pdf
    • http://files.alexandermorrisart.com/uploads/1/3/2/6/132683181/4037346.pdf
    • http://files.monumentblog.com/uploads/1/3/1/3/131381031/ec211d84a.pdf
    • http://files.blackberrywhite.com/uploads/1/3/0/7/130739827/852654.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/lovoxeviw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/rolagezegubot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78992801071.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/53551915904.pdf
    • https://xadotafemev.files.wordpress.com/2020/07/xenikapu.pdf
    • https://bolivuxane.files.wordpress.com/2020/07/64099267513.pdf
    • https://dedovirap.files.wordpress.com/2020/07/bemaribejipofupetitura.pdf
    • https://nopozuzat.files.wordpress.com/2020/07/digexemujokulu.pdf
    • https://dumatogolage.files.wordpress.com/2020/06/nosomelipax.pdf
    • https://cdn.shopify.com/s/files/1/0436/0581/9550/files/zivaxeranorenanunox.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/10748650999.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/denelarosakodadokodebakig.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5462/files/bolosuvewexezizozidutima.pdf
    • https://cdn.shopify.com/s/files/1/0436/5965/7374/files/zufopugesawanaxopar.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/miragifus.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/zejulamojeviremevod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240db.bin
d43504a08b2e690455182989a018914db88a091e7a707a0f5114d9fc514f9dff
pdf-font-stream PDF embedded font (sfnt) at offset 0x240DB 7228 bytes
font_01_sfnt_off00025939.bin
5349395ff145ed2b09a6b75e292cadda0c82e39c40512ffee21625b07b146fad
pdf-font-stream PDF embedded font (sfnt) at offset 0x25939 4928 bytes
font_02_sfnt_off000269d3.bin
878b6046e53cedb46fb9b66748ccd13fc107bd4d79bd94d928b1f83dca760a7e
pdf-font-stream PDF embedded font (sfnt) at offset 0x269D3 10588 bytes