Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f22cb0655373d8e…

MALICIOUS

PDF

39.0 KB Created: 2020-03-14 11:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1e1f795f701196c465d1fcd6928a9696 SHA-1: f9a558b37bbdfe74147c65272353a23dbf2e30e7 SHA-256: 2f22cb0655373d8ef49d6662d4e5a5fcb290692bae52b5386dd10232c30d9855
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains text related to 'html login forms' and numerous URLs pointing to various domains, reinforcing the lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.happyraptordistilling.com/uploads/1/3/0/6/130640044/130640044.html#beautiful+html+login+forms
    • http://goldingrain.com/uploads/1/3/0/3/130379474/xopekig.pdf
    • http://altitude701.com/uploads/1/3/0/5/130589279/nivupelasozusag.pdf
    • http://molll.online/uploads/1/3/0/5/130542769/viwetapuzis.pdf
    • http://plex.run/uploads/1/3/0/3/130323332/difokutizujoxuvete.pdf
    • http://freemichiganquotes.com/uploads/1/3/0/6/130640022/lapidoj_melono_jonevalaxuk.pdf
    • http://rockout.live/uploads/1/3/0/5/130543057/233264.pdf
    • http://www.songsbyrebecca.com/uploads/1/3/0/6/130621734/1277482.pdf
    • http://squaretaper.info/uploads/1/3/0/8/130814346/kelav.pdf
    • http://masliahcenter.org/uploads/1/3/0/5/130589400/7313794.pdf
    • http://www.avialinn.com/uploads/1/3/0/7/130739454/texadigixi-tuzamijoba.pdf
    • http://mysteriousancestor.com/uploads/1/3/0/6/130604225/f624f293b570.pdf
    • http://www.adimarga.com/uploads/1/3/0/2/130291463/pogizedaraxu_tenovigogo_legiwuwexetobom_vidofuwexasorod.pdf
    • http://langlegacyllc.com/uploads/1/3/0/3/130379060/6161299.pdf
    • http://ops.raptors.rocks/uploads/1/3/0/5/130589097/wotukege.pdf
    • http://www.frontseatoffunny.com/uploads/1/3/0/6/130640070/2594808.pdf
    • http://www.littledarlingscookieco.com/uploads/1/3/0/2/130291922/9081595.pdf
    • http://ns1.random-design.net/uploads/1/3/0/3/130324278/lulaginowe_zatiligov.pdf
    • http://wrinkleddogs.com/uploads/1/3/0/6/130621755/bexavatokudiwekapisu.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007031.bin
a8fdf53f2341c7a84a9c4e8e0efcedbc69116cf8f9a8f29e6fbb8135eba83f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 7908 bytes

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