Malicious PDF — malware analysis report

Static analysis result for SHA-256 9809cdd7f67ca674…

MALICIOUS

PDF

41.0 KB Created: 2020-09-17 09:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b140da0d0db95991994999b4e0b9ba3b SHA-1: 46f7f4251629875361a51abcc018aa6505ae7c3f SHA-256: 9809cdd7f67ca6741c92d2f3b0bd54342093517bb1899899466f0c60ae3ea41b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.link/wix?keyword=conan+exiles+solo+leveling+guide', is designed to redirect users to potentially harmful content. The document also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify. The presence of a malicious redirector suggests an attempt to lure users to a phishing site or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/wix?keyword=conan+exiles+solo+leveling+guide
    • http://files.toddkisicki.com/uploads/1/3/2/8/132814241/25abc1aa1e1.pdf
    • http://rujur.carmenpuscas.com/uploads/1/3/1/3/131380999/8777213.pdf
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/38967287267.pdf
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/calendrier_2020_avec_jours_fris_vacances_scolaires__imprimer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4343/0305/files/beruxeniwimefuzu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/fobag.pdf
    • https://cdn.shopify.com/s/files/1/0431/7190/5698/files/seninepoxazujupopisevasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6673/files/adding_netflix_app_to_android_box.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/guidelines_in_filling_up_form_137.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/31357796468.pdf
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/nubaliwagaputuve.pdf
    • https://2ec37e12-ae2b-4c83-b474-6ad9cf1a6579.filesusr.com/ugd/a42eed_b9ee21b996e7462ca62febccfc210546.pdf?index=true
    • https://a20b266d-c793-4c3a-b553-46ca3b6d009b.filesusr.com/ugd/7dd30d_d09cdf31f64c457ca8d48e76fe51bd38.pdf?index=true
    • 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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006253.bin
f1b3963d628c9d2246459bb417129c9070c1bdbc27e03b3e35da3f5cb511ae79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 4932 bytes
font_01_sfnt_off00007334.bin
8bf56174779bf0f3cdc96819ca9eef14e4e97220af1898aff959bc482407bf1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 10632 bytes

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