Malicious PDF — malware analysis report

Static analysis result for SHA-256 5922aab92ce5e3bc…

MALICIOUS

PDF

73.4 KB Created: 2021-05-17 20:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a6df2dd175a7f4303c983302a5135382 SHA-1: 95a113a311251351811cb38cb21cc3388846eeca SHA-256: 5922aab92ce5e3bc7098ccca5737325f24a6b0aece187032a674a161a3f7ad01
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://kuzutuzo.ru/strik?utm_term=how+much+oil+goes+in+a+honda+snowblower PDF link annotation
    • https://sanituwinera.weebly.com/uploads/1/3/1/3/131379206/kamofopokaj_lakubolilosese_pojubuje_zitotufawone.pdfIn PDF document text
    • http://setafugeridol.scienceontheweb.net/chemistry_a_molecular_approach_2nd_canadian_edition_free.pdfIn PDF document text
    • https://zozutogumudeke.weebly.com/uploads/1/3/4/4/134440166/2515449.pdfIn PDF document text
    • http://tusiteguluvora.getenjoyment.net/46773077286.pdfIn PDF document text
    • https://norasavunoga.weebly.com/uploads/1/3/0/8/130874384/nasenoluba-regodibikadagu-toludakobot-sofibomawanigaj.pdfIn PDF document text
    • https://pogefaduvo.weebly.com/uploads/1/3/5/3/135391099/zulenona.pdfIn PDF document text
    • https://zegasapazenavu.weebly.com/uploads/1/3/5/3/135326880/sojekef-mivonagivul.pdfIn PDF document text
    • https://sajinekud.weebly.com/uploads/1/3/5/3/135391411/tixira.pdfIn PDF document text
    • http://nadipewin.mywebcommunity.org/17929381660.pdfIn PDF document text
    • https://dumejolizaxoko.weebly.com/uploads/1/3/0/8/130814858/vitexijal.pdfIn PDF document text
    • https://xijapesulole.weebly.com/uploads/1/3/4/5/134588017/kavori.pdfIn PDF document text
    • https://renixopofofof.weebly.com/uploads/1/3/4/4/134486295/modaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/63911316470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4deaa99-52f8-4d36-be88-896180a699d2/ingenuity_baby_bouncer_battery_size.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/ear_piercing_pain_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/mathematics_worksheets_addition_and_subtraction.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/schwinn_240_recumbent_bike_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/mevixuvobagax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82586f78-bbad-4bdd-ba0a-4d4178b0d7b0/16915111062.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/how_to_update_my_acer_iconia_tablet.pdfIn PDF document text
    • http://sazurufupamaxa.myartsonline.com/98041987439.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/tupovoxoradumamemimozife.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/cheap_blue_jackets_tickets.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/segiseneko.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AA 5544 bytes
SHA-256: a4a22e35b2c1a6c91cb5e8f2b4aba18041ac25cce883f882a764fdfa4411804c
font_01_sfnt_off0000f56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56A 10120 bytes
SHA-256: de6ecbbb403ef097bb09af603a1189139631b6005717c52ac14f6326446f9b2f

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