Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dfe34217a68b6f6…

MALICIOUS

PDF

90.6 KB Created: 2021-03-24 16:59:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77b03bea013426632aaa678ba5781b5b SHA-1: bca45b8e86029f50749042f248d73dfe2610f779 SHA-256: 6dfe34217a68b6f6c0ae5587cff55ae79877286c3e20e1e1dc331c7b87fdafbf
196 Risk Score

Malware Insights

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

The PDF contains a mass external link farm and is flagged as a classic advance-fee fraud document, indicating a scam lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to deceive users into believing they will receive a prize or parcel, requiring payment. The presence of numerous external links, including those to Weebly and other hosting services, points towards a phishing or scam operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://resalured.ru/123?utm_term=language+development+android+apps
    • https://tulosiwawi.weebly.com/uploads/1/3/5/3/135326734/bevunojejev.pdf
    • http://copriyghtconfirmed.com/jidoniluxatoqf386.pdf
    • http://steelsho3.club/tuzatimomolonamipumuf6oun.pdf
    • https://static.s123-cdn-static.com/uploads/4378152/normal_5ff71ad872e39.pdf
    • https://wovenatoz.weebly.com/uploads/1/3/1/4/131454427/niduramigupuwux.pdf
    • https://dixudijoketaf.weebly.com/uploads/1/3/4/6/134661748/lolurusiz-kuxoj-bawipazeramet-deguwasafaj.pdf
    • http://libertinemodels.com/15509225349j0z2y.pdf
    • https://poxapoxidofex.weebly.com/uploads/1/3/4/0/134016688/widelileter-lererereda.pdf
    • https://cdn-cms.f-static.net/uploads/4465919/normal_6058b3bc1b90c.pdf
    • https://bowulujakem.weebly.com/uploads/1/3/1/0/131069806/91524256f.pdf
    • https://static.s123-cdn-static.com/uploads/4478398/normal_5fc84cd3867a9.pdf
    • https://cdn-cms.f-static.net/uploads/4388156/normal_5fe770507f74c.pdf
    • http://yandex-dostav.ru/xotezozopuwenanirezeg08ghn.pdf
    • http://boost-store.net/47192962859v6xmr.pdf
    • https://static.s123-cdn-static.com/uploads/4405430/normal_5fe273fe7084a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jafujasiwetid/7966651215.pdf
    • https://uploads.strikinglycdn.com/files/a2b406c6-c5c2-4a1d-90f7-b55d9fdcef8f/chicken_soup_for_the_soul_think_positive_free.pdf
    • https://s3.amazonaws.com/purixifusipelid/admission_form_format_for_computer_institute._doc.pdf
    • https://s3.amazonaws.com/gimufesajo/zekisewunelurutikurosur.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/pisar.pdf
    • https://s3.amazonaws.com/kisimujuk/camera_effects_platform.pdf
    • https://uploads.strikinglycdn.com/files/bfec9e9d-f0a5-4d8c-9065-d3ecec539f42/how_do_i_fix_the_sound_on_my_sony_tv.pdf
    • https://s3.amazonaws.com/desenaz/11483218748.pdf
    • https://s3.amazonaws.com/vidadaviwal/zeteduzig.pdf
    • https://s3.amazonaws.com/pizivurapab/banjara_banjara_full_song.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120fa.bin
52629ac48520d9c7cc0c1c9130c6a5b461380293d743cc2af8cac18adcf8be61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120FA 5280 bytes
font_01_sfnt_off000132e4.bin
9072220a5cf1f10f49aebf3fd816eff8d88dba228564b71fe4c71591a9ca7776		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132E4 12472 bytes

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