Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8b81c056df6d5d…

MALICIOUS

PDF

77.2 KB Created: 2021-02-25 12:09:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 8aea50455f8c3811e18d80b49c5d94e3 SHA-1: 22058c41578017b0f9f23aa0c2f4c2c6d1b13720 SHA-256: 2d8b81c056df6d5ddc7e3ec2eeab78af80cef6210e92d261fffb11ba71567d5a
66 Risk Score

Malware Insights

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

The PDF document uses a seemingly innocuous topic to disguise its malicious intent. It contains a large number of embedded URLs pointing to disposable domains, many of which are likely part of a link farm designed to redirect users to further malicious content. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://jacksth.ru/aws?utm_term=how+to+use+wii+u+pro+controller+on+pc+without+bluetooth PDF link annotation
    • http://dujojiwasemob.mywebcommunity.org/68170701966.pdfIn PDF document text
    • https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/97c5d946.pdfIn PDF document text
    • https://furedanoduribi.weebly.com/uploads/1/3/4/6/134681858/vomaxapuna.pdfIn PDF document text
    • http://usacarins.com/wisixadoxufoxiwebunikavull09b4.pdfIn PDF document text
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/753179.pdfIn PDF document text
    • http://fresh-ita.fun/18393105381cmfzo.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/72400232838.pdfIn PDF document text
    • http://komaxinatobofe.medianewsonline.com/kijuxi.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/zulezurodifinu.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/piano_notes_on_61_keysoxu1y.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/ghlKYS0/video_status_maker_with_lyrics_apk_download.pdfIn PDF document text
    • http://bobr.space/beauty_and_the_beast_scriptrj53s.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/gedakuvesifoxe.pdfIn PDF document text
    • https://tabawowap.weebly.com/uploads/1/3/4/5/134599755/64181e.pdfIn PDF document text
    • https://gomarevijupa.weebly.com/uploads/1/3/4/5/134585171/3106436.pdfIn PDF document text
    • http://robolab.one/puzitinaxetawepax7shy.pdfIn PDF document text
    • https://sinemitivivofa.weebly.com/uploads/1/3/0/7/130740142/4595aa5a7b8d3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CB 4884 bytes
SHA-256: 81547eb7bf512c7d65fb4b976e63b3eb0f4fdbab6e6b264a83aa9e4b43fc513e
font_01_sfnt_off0000f468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF468 10528 bytes
SHA-256: 7634613e3b6e3e971aba48d969eae55a6d5da57763e2ba8e1109eb65bc2d948d
font_02_sfnt_off0001187b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.