Malicious PDF — malware analysis report

Static analysis result for SHA-256 edd1670392ab653c…

MALICIOUS

PDF

75.2 KB Created: 2021-03-13 19:21:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3b81056b4b7e27421ac80c5e2cacb611 SHA-1: 371eb3646e713004100d28e495458b18aee4daef SHA-256: edd1670392ab653cc6d6ce490b28bfa9148d1ae0b02e3864ae3f925d59d67425
146 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. It uses a callback-phone (TOAD) lure. 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 6

  • 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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=mbi+setl+deposit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479445/normal_5fe91372d8657.pdfIn PDF document text
    • http://myirn.icu/what_is_another_word_for_customer_retentionzovvv.pdfIn PDF document text
    • http://prizinsta24.space/schema_boite_a_fusible_transporter_t41bdyd.pdfIn PDF document text
    • http://vabuletarikinil.iblogger.org/rimufilukate.pdfIn PDF document text
    • http://natgood.space/641653990922hlbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490123/normal_5fdf4d01ec476.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373301/normal_602197b24bc74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_601ffded14aa6.pdfIn PDF document text
    • http://guwivup.iblogger.org/62526176027.pdfIn PDF document text
    • http://flowerport.store/wivawelinavunumazanusiwex9hs2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388183/normal_5fcc7d065bdc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461202/normal_5fd112d702f35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383692/normal_60065e885fa30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495681/normal_6046453751370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477156/normal_5fd9256a28796.pdfIn PDF document text
    • http://asta-stroy.ru/mini_cooper_r56_oil_reset4vham.pdfIn PDF document text
    • http://totalcreditcheck.info/husqvarna_125b_leaf_blower_air_filterovea6.pdfIn PDF document text
    • http://smotrikino.fun/jufijulieqofj.pdfIn PDF document text
    • http://znasila.ru/12503717712slu9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda6799d-a943-4dcc-828a-e108adcc306c/54891835420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc50911c-61da-4a48-8827-9d4546987a6b/mipujamedakimibageje.pdfIn PDF document text
    • http://lidufaz.epizy.com/92935869506.pdfIn PDF document text
    • http://wukofov.epizy.com/rikemofelozome.pdfIn PDF document text
    • http://tukutuxobolekub.epizy.com/belly_fat_cure_sugar_carb_counter.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FE 4792 bytes
SHA-256: cffed2688ba0ba4e23e2a85a43c8cd4c6dab17b02a69b9d1d9e7448647b1ae6a
font_01_sfnt_off0000f962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF962 11084 bytes
SHA-256: 4fc8805074583819afc64510f9c09e6583e6d02b641b2799eb624023a91fb9a1

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