Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d96228577eb14a…

MALICIOUS

PDF

46.6 KB Created: 2020-08-08 15:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f473465e92ab2d1f15b921aea8a7e34 SHA-1: bc4d04b965244e6c1a47151ba4b20e1df2670b45 SHA-256: 84d96228577eb14a88b174597d682691ec1f896812edb79c86dae539106e027b
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector, which is a common tactic for distributing malicious content. The document body, though obfuscated, contains text suggesting a lure related to a prayer book, which is then linked to a malicious URL. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt to attract victims.

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.com/pify?keyword=benedictine+daily+prayer+a+short+breviary+pdf
    • http://files.calhanorteportal.com/uploads/1/3/1/4/131453871/woxekeribavasoweju.pdf
    • http://files.honsinternational.com/uploads/1/3/0/7/130738974/jitoxixas_lileremeno_boritabukuxija.pdf
    • http://fuves.incaenterprises.org/uploads/1/3/1/8/131871674/tewel.pdf
    • http://files.theishayafoundation.org/uploads/1/3/0/8/130814127/459683.pdf
    • http://files.karljfulton.com/uploads/1/3/1/3/131384136/15a28b762cdd9eb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/gegivelofogukulewuguzawen.pdf
    • https://cdn.shopify.com/s/files/1/0434/4784/5030/files/budget_2020_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/sovepitolosiwisoxoza.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/palugilalilidunufuzote.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/64176177168.pdf
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/69490926327.pdf
    • https://cdn.shopify.com/s/files/1/0434/0675/3948/files/99529958920.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/jodimifitiwisolexomobi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4190/5045/files/betaina_trimetilglicina.pdf
    • https://cdn.shopify.com/s/files/1/0434/8100/6244/files/76260770284.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/5256725100.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/lemisiwobiwexaxuwew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/tesajiwegititaxonomika.pdf
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/77067095014.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_off000077a1.bin
f0151734980949e3eaaa26b77b9f8ca49cb657629ddc6c3c475fc288fe7bd54f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 5596 bytes
font_01_sfnt_off00008aa9.bin
42964eae48a12c4443becef8822886a995e68c8988fbb85a14d789b41fdde8e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 10120 bytes

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