Malicious PDF — malware analysis report

Static analysis result for SHA-256 777a50bf84d56da8…

MALICIOUS

PDF

69.6 KB Created: 2020-05-16 18:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0216479df26357fbc2a76f5d583048a SHA-1: c7cb30eaf05516eaf91fe319f2e023501a467ca5 SHA-256: 777a50bf84d56da81e04868b49627516263a637da15a3b1c00d27cba83f1cc35
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The document body presents itself as horoscope information to disguise the malicious intent. While no scripts were directly extracted, the presence of numerous external URLs indicates a potential for downloading further malicious content or redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • 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.
  • 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://twistedsugarut.com/uploads/1/3/0/4/130491932/130491932.html#information+about+capricorn+star+in+urdu+2018
    • http://campoutbrand.com/uploads/1/3/0/4/130489359/luvukuresufavu_japuvesa_lifal_legijifu.pdf
    • http://eltorominimercado.com/uploads/1/3/0/7/130776159/fumimobuku_fipesib_musojamotijora_kiputo.pdf
    • http://anandalaketahoe.com/uploads/1/3/0/4/130436190/bc84bf.pdf
    • http://damonsinclairholdings.com/uploads/1/3/0/6/130605435/fugigiritakuku_fipubidoxugufun_zurexux.pdf
    • http://moving-is-easy.com/uploads/1/3/0/5/130541881/miraxejevefuzon.pdf
    • http://frameplug.com/uploads/1/3/0/7/130739720/11cef01427.pdf
    • http://donaldandgoliath.com/uploads/1/3/1/8/131871593/futojugowe_diberezokanaboz_pufazezage_lusoniwefeb.pdf
    • http://tnaptassoc.org/uploads/1/3/0/5/130551523/suribobivojexamaba.pdf
    • http://ahsni.com/uploads/1/3/1/0/131070356/gubakadum.pdf
    • http://pinetoplodge.com/uploads/1/3/0/6/130621334/porowidaw.pdf
    • http://kandaceportfolio.com/uploads/1/3/0/5/130539450/vemojafetafavim_xidakos_jekatikenu.pdf
    • http://daoustavocats.com/uploads/1/3/0/5/130550790/daregi-deresu-jojukilebaz-berinofejat.pdf
    • http://havinetvzw.com/uploads/1/3/0/5/130590700/dasajov.pdf
    • http://staum.org/uploads/1/3/0/6/130605501/9425698.pdf
    • http://erinmccamley.com/uploads/1/3/0/6/130605519/5837ea45.pdf
    • http://onehellofaweek.com/uploads/1/3/0/2/130272395/dejidogalamiko.pdf
    • http://sgoddessbyshanice.com/uploads/1/3/0/7/130739567/43d97.pdf
    • http://playercoaches.com/uploads/1/3/1/6/131606047/melezirebimasepi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000d3a7.bin
7a1a79f1b6889dbce63df9979471945aab98b7f6d0a8228f373572037e16dc5b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD3A7 32764 bytes
font_00_sfnt_off0000b5d0.bin
6cf240e956e7d6110afd0dbec4916ee4a2347e1077eb39cc3bb95458f958c428		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D0 8672 bytes

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