Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2006b1627b4d042…

MALICIOUS

PDF

64.9 KB Created: 2020-08-28 14:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2a45e6f49779cc8740ce9e6ddf60e2df SHA-1: 1c4ef64d17baed2df29d595c0ee7782391828029 SHA-256: f2006b1627b4d0424502aa182a5803eb781f093d145eef36599f2ae283d3e110
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the suspicious redirector. This suggests the primary purpose is to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=spore+druid+5e+guide In PDF document text
    • http://files.chuyitos.com/uploads/1/3/0/8/130874594/fotikovikog.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://cdn.shopify.com/s/files/1/0438/6321/2192/files/51285262066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1671/files/runescape_imp_catcher_quick_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/6338716421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/69664449678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/76948694468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0455/files/sakowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/gukupajuwadegimovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/fixasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/11688174019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2484/2906/files/ramejofoxokutavazoribomaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/38801882687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1901/6104/files/kinds_of_sentences_worksheet_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/55039680118.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_off0000b677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB677 4632 bytes
SHA-256: 9761b4c5aa56636a32907339453b799d99dae59ec661a45c9037d52141dcc473
font_01_sfnt_off0000c63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63C 10024 bytes
SHA-256: 93465eff095baccb73d3474d06d80aa19b38aa2aa1e3932798ae7de99f401acb
font_02_sfnt_off0000e88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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