Malicious PDF — malware analysis report

Static analysis result for SHA-256 707d6658781563ce…

MALICIOUS

PDF

73.9 KB Created: 2021-03-07 05:00:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ca71bfa755d5b2dc91f351709fb787f2 SHA-1: 02beb77788e165fe1a17e656440c47a2c53e5b3f SHA-256: 707d6658781563cec05d575b7cc24fbe8935dc42c15b3c8df71b6eca0866ab25
176 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one prominent URL pointing to a suspicious domain that appears to be part of a phishing or scam campaign. The heuristic 'SE_CALLBACK_LURE' indicates the document is designed to trick users into calling a phone number in a context of billing, refund, or security issues. While no scripts were directly extracted, the presence of numerous external links and the nature of the heuristics suggest an attempt to redirect users to malicious content or engage them in a fraudulent scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://baarspo.ru/strik?utm_term=vtech+phone+cs6919+battery PDF link annotation
    • http://meriline.store/animation_throwdown_cards_listblgy6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425514/normal_6039e0c1821a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367281/normal_5fc720a6e643a.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvopone/OKihqnZ/nixafoneguk.pdfIn PDF document text
    • https://cdn.sqhk.co/nidimejuzu/nXomrgi/sagonowilulenol.pdfIn PDF document text
    • http://goromeo.club/killer_bean_movie_in_tamil2orq3.pdfIn PDF document text
    • https://cdn.sqhk.co/bojowagawire/gDlzLhe/rivaguxo.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemonuru/eichddY/wordscapes_in_bloom_level_1583.pdfIn PDF document text
    • http://idealica-official-it.website/ge_spectra_oven_troubleshootingxo19y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419430/normal_603578a81c082.pdfIn PDF document text
    • http://fruitik.space/zorav4apar.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/wulagisi/59406301088.pdfIn PDF document text
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_b44d89bef089455fad47c997b65307cd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sisaxu/ansys_mechanical_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/80879897170.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/honda_hrr2168vka_for_sale.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_03243141f9ae47b5a16b30a2646cc81c.pdf?index=trueIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_efb3c69a1c7f43918321520782719b96.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/nimesadobijuleneb.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/79773595553.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/english_grammar_learn_practice_tests_level_b1_2019.pdfIn PDF document text
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_3a5f2b5bf7474a469c3e3d243d1e9050.pdf?index=trueIn 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_off0000e26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26F 5556 bytes
SHA-256: 31bdc650cfd4c48f8d1fbd81c7c7b7f14b673fb7c169f02a2a48fc3f711b00b6
font_01_sfnt_off0000f554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF554 10952 bytes
SHA-256: 27e8ee8d832352828f96796467126223920723603b2eefdf3fc720331a85b5ce

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