Malicious PDF — malware analysis report

Static analysis result for SHA-256 244aed75c49ca1e9…

MALICIOUS

PDF

48.9 KB Created: 2020-08-12 01:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 689880de70489baca461a51e935c7c75 SHA-1: 4375e7a2989808d709b5c4a8a8558a51baee5149 SHA-256: 244aed75c49ca1e9b7d3591817bf7aa6e5c32b41c9229d3e6130ca8f096373d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to PDFs hosted on Shopify. The embedded URL in the document body also leads to the 'ttraff.ru' redirector. These elements suggest a campaign leveraging SEO poisoning or phishing tactics to drive traffic to malicious infrastructure.

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.ru/pify?keyword=absorcion+quimica+pdf
    • http://vumunopof.5thstreetfinancial.net/uploads/1/3/1/1/131163635/rorumuj_lukuxukajoralof.pdf
    • http://fizidako.derrickjackson.com/uploads/1/3/0/9/130969352/pekefexi.pdf
    • http://files.adanacfloor.com/uploads/1/3/2/6/132682806/lakirazevaxol-zubewanefewelud-birami-vunabe.pdf
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/vision_ias_current_affairs_august_2020_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4996/files/nuveriwejokogudoleliwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/50473198599.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/xusara.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/3769325498.pdf
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/pukawisugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5207/files/54724301390.pdf
    • https://cdn.shopify.com/s/files/1/0430/9424/5537/files/german_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/95157401365.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7918/files/apartheid_laws_from_1948_to_1994.pdf
    • https://cdn.shopify.com/s/files/1/0437/6245/0586/files/337637116.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/64824485373.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/
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/vision_ias_curren

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080d8.bin
880d00d30b317a1cff301803e9b8e87283b3d91854ffab3455978b1b9767b478		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80D8 5524 bytes
font_01_sfnt_off00009370.bin
d1229e0c2bec3ac0fe06c580153222d28808ca8f2d36f4f14525d20284f116ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9370 10356 bytes

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