Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b3a11420fe20dd…

MALICIOUS

PDF

133.6 KB Created: 2021-03-27 10:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5fcd94acc07cce7a2309c7a040d395d3 SHA-1: 37918e722ea288576360e03af7d902101fb19efb SHA-256: f1b3a11420fe20dd7b0239cd0432df0384097a05cd03f91a3a8ed74536bb4a36
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a PDF link farm. The document body, though heavily obfuscated, suggests a lure related to 'payment of bonus act'. The presence of external URLs and the heuristic firings indicate an attempt to redirect the user to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/award?keyword=payment+of+bonus+act+1965+pdf+in+marathi PDF link annotation
    • http://b4shop.icu/savaxufvvm75.pdfIn PDF document text
    • https://xurebutira.weebly.com/uploads/1/3/2/6/132681359/ranutav-jibemezuwudob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422377/normal_5fcd14e6a92dd.pdfIn PDF document text
    • http://uabiomanix.xyz/algebra_2_eoc_review_packet_answersqmeej.pdfIn PDF document text
    • https://xinuxarovota.weebly.com/uploads/1/3/0/7/130776268/zomaxodi.pdfIn PDF document text
    • https://xewikoleruwi.weebly.com/uploads/1/3/4/8/134897031/faxomajokamat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_600ba1a9d03f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449783/normal_5feb4b22e7f29.pdfIn PDF document text
    • http://belkwigs.com/no_recoil_sensitivity_pubg_mobile_gyroscope0reyz.pdfIn PDF document text
    • https://gazodajatara.weebly.com/uploads/1/3/2/7/132712558/8824099.pdfIn PDF document text
    • https://mowofagafuvu.weebly.com/uploads/1/3/4/5/134594922/728024.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/rebesudanolo/73353496755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c2bfeb1-b0d4-40ec-b942-d7e626fc1cce/47606363929.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/zavaromezeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/gubatobanugupoxasaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c759e4cc-b160-4986-85e0-f5997ba0f534/cnc_programming_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01bca217-095a-472f-af10-73829cb50351/is_your_capitalized_in_a_title_ap_style.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/tuk_tuk_rickshaw_game_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005be1aa-4504-4c96-9044-13999367a24a/how_to_use_a_presto_23_quart_pressure_canner.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/xoferefilukekabaxevul.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/leo_principe_atitude.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_off0001cc2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC2C 6092 bytes
SHA-256: 9a17c1971d1953856e89ff238af420f5b9e767d3345f91722d701455e25c0f0d
font_01_sfnt_off0001e0c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0C5 11160 bytes
SHA-256: 2288f7bf7e4d34a21e345d4b21053916deb608f550f9152e7398c751597a99f5

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