Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d6ed14095782a5…

MALICIOUS

PDF

78.7 KB Created: 2021-04-27 08:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6a32084e15acca07e80e2bc8cf5815ed SHA-1: eab927c785cfe16a380134e9f1832e77337b73f3 SHA-256: 54d6ed14095782a53eb51ca5c2c9ebcfb802e0301fe5afb6ca8ea9b52fb16e91
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm designed to manipulate search engine results or distribute further malware. The embedded document body, though truncated, contains text related to 'network marketing pdf free download', which is a common lure for phishing or scam content.

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 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.
  • 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.
  • 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://ponafet.ru/strik?utm_term=go+for+no+for+network+marketing+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459631/normal_60304367b676e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491412/normal_6040fac028c66.pdfIn PDF document text
    • http://fibutogu.mywebcommunity.org/48844745602.pdfIn PDF document text
    • http://moscowflowers.online/34601679402e8ivt.pdfIn PDF document text
    • https://bunutawopuzo.weebly.com/uploads/1/3/4/8/134868528/fififesoji.pdfIn PDF document text
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/b5dd2.pdfIn PDF document text
    • http://sarawavenudiwap.mygamesonline.org/athlean_x_inferno_max_size.pdfIn PDF document text
    • https://gidafefutor.weebly.com/uploads/1/3/4/0/134040883/figodanati.pdfIn PDF document text
    • https://wuwotozon.weebly.com/uploads/1/3/4/3/134315251/74848906d61f767.pdfIn PDF document text
    • http://clientbluebadge.com/tony_robbins_despertando_al_gigante_interior4h4m3.pdfIn PDF document text
    • http://hrushch.space/3809234831rnpvl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490365/normal_5fe59c813955b.pdfIn PDF document text
    • http://aduo5.online/82438570212dd558.pdfIn PDF document text
    • http://dimax-matrasy.ru/36006479100upxz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529697/normal_5ff07791b5725.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d9226533-59f4-4737-ae77-cfa9cdee5378.filesusr.com/ugd/d7c203_d0218dee3dd9461b9bdee74929a7f146.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/is_navy_federal_open_today.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/10097192343.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/97386658041.pdfIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_a20e0348281440ff95302c9bd78aba2d.pdf?index=trueIn PDF document text
    • https://590703a0-be71-4d3c-a49f-17767d5969ef.filesusr.com/ugd/656c20_7b7c6a23b5094d19bcdb486509fdf1ae.pdf?index=trueIn PDF document text
    • https://50c84cdf-c8d4-407e-a307-361b94491100.filesusr.com/ugd/f2656e_321ff33d300c4e06962499de9adf790d.pdf?index=trueIn PDF document text
    • https://f0eb70e7-a818-4ef6-a4f0-9c477642c899.filesusr.com/ugd/bca722_071f3d87f80e40628896e7b623ee783e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wejuvono/hindi_consonants_with_english_letters.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_off0000f3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E9 5372 bytes
SHA-256: 589d7772d79d9b3681db949f0fcd18358cdd152605217cad16e1c30377d66778
font_01_sfnt_off00010632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10632 11588 bytes
SHA-256: 8dea02dcb543514252a73d16b599a1882d726d403364fb77551881261a96b025