Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b8617fce1ec6dd…

MALICIOUS

PDF

82.0 KB Created: 2021-04-30 16:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 501ef2011cb34402c8413aa4832e7388 SHA-1: 03f125d30222f63df7a0629f260e1b42cb645974 SHA-256: b0b8617fce1ec6dd68be94d9bc1d5d657d2b60954340c66fe12d2881429b44cc
156 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, with critical heuristics indicating it contains a large number of external links, suggesting a link farm or redirection scheme. The embedded URLs point to suspicious domains, likely intended to host phishing content or further malware. Although no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/strik?utm_term=i+pilot+link+remote+won%2527t+turn+off PDF link annotation
    • https://fefirewaw.weebly.com/uploads/1/3/0/7/130775199/gabopifoxarena.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/98922952943.pdfIn PDF document text
    • https://jomigotub.weebly.com/uploads/1/3/4/7/134748998/zedabimitis.pdfIn PDF document text
    • https://tekaxudifen.weebly.com/uploads/1/3/5/9/135992886/7087941.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://namafafiteg.mypressonline.com/o_avivamento_do_pais_de_gales_livro.pdfIn PDF document text
    • http://balifruit.com/mahindra_tractor_showroom_near_mejb1ln.pdfIn PDF document text
    • https://didegesub.weebly.com/uploads/1/3/2/6/132681352/lumusovefit_nojepimozugatax_bixadusuxuveru.pdfIn PDF document text
    • https://nimamadud.weebly.com/uploads/1/3/1/8/131856523/96565.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/correlative_conjunctions_in_english.pdfIn PDF document text
    • http://italysummer.fun/cisco_esa_c390_datasheetmbtc4.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/you_learn_by_livinghdcw2.pdfIn PDF document text
    • https://ligonulijer.weebly.com/uploads/1/3/5/3/135318365/9923618.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/sony_gold_wireless_headset_review_2018.pdfIn PDF document text
    • http://eurozone.pro/tegibapadie1kg8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/geradi/graco_magnum_pro_x7_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/dafumuxitupav/amplitude_modulation_examples.pdfIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_62a1d406da5a413a95eccd13cc68de86.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuxime/71017140535.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/cdc_yeast_infection_guidelines.pdfIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_74e05d1e755243a4a0fbab0d616be52b.pdf?index=trueIn PDF document text
    • https://94db4134-5784-44c5-a63d-963e509970fa.filesusr.com/ugd/9c58c5_b7b33953a8e348bd96d4670ac1ef2b01.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/bukexebumapukupofufo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF699 4668 bytes
SHA-256: e523a60131c7aad8fd7e38bde227f7b2ad1e4c660e201008b43956d2ba4be4a2
font_01_sfnt_off0001066b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066B 10872 bytes
SHA-256: 62701e5afd8d5df730426c304cf1bc03af83ba4a6088437e9109297b7e3475d2
font_02_sfnt_off00012baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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