Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e5df91e2034f6c…

MALICIOUS

PDF

37.4 KB Created: 2020-06-14 23:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25ff31fbcb63a8d5ef8137390bd46622 SHA-1: 4cc69a27f52b6d4422c32e092950c1ab3ea7e5ab SHA-256: c1e5df91e2034f6c5f984e0b24c8e10b8c727f2c5ce3402251192dfc5e77e83a
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The document body includes a deceptive title 'Eres tu maria packet answers' and numerous URLs, reinforcing the attack pattern of directing users to potentially malicious external sites. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://mail.newcreationmartialarts.com/uploads/1/3/0/4/130483902/130483902.html#eres+tu+maria+packet+answers
    • http://specialhandscleaningservice.com/uploads/1/3/0/8/130814004/gawopegen.pdf
    • http://lunagardenlearning.com/uploads/1/3/0/6/130639535/2231233.pdf
    • http://diamondtoolholders.com/uploads/1/3/0/2/130274151/bd6ac5a88bb4b34.pdf
    • http://webdisk.pasha.com.vn/uploads/1/3/0/5/130588795/ce647e76a5.pdf
    • http://boaglaw.com/uploads/1/3/0/7/130738542/2786162.pdf
    • http://razielleyoga.com/uploads/1/3/0/2/130272233/pakurepiwusedoki.pdf
    • http://hostmaster.vakantiehuisin.eu/uploads/1/3/0/8/130813777/xijufu_lures_zifakumob_zesovazaw.pdf
    • http://jbtravels.net/uploads/1/3/0/4/130494059/f19786059204df.pdf
    • https://wofopisuf.files.wordpress.com/2020/06/19099190373.pdf
    • https://fububoxoludi.files.wordpress.com/2020/06/juxetuvixebabat.pdf
    • https://ligezorudoz.files.wordpress.com/2020/06/41892041314.pdf
    • https://wenowugig.files.wordpress.com/2020/06/86687076710.pdf
    • https://masivamup.files.wordpress.com/2020/06/miretezewizuw.pdf
    • https://wekunupapire.files.wordpress.com/2020/06/mawezodakokogoxiwulirobuk.pdf
    • https://dijilavuxiji.files.wordpress.com/2020/06/pubixonorejufizenu.pdf
    • https://gitebilav.files.wordpress.com/2020/06/74675330436.pdf
    • https://pewesel.files.wordpress.com/2020/06/71198478685.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_off000061a0.bin
60aa1c906238ad123752aae6698f246e0e5efb90a5fd13ca7d35f5b5886593e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A0 11936 bytes

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