Malicious PDF — malware analysis report

Static analysis result for SHA-256 c396a5c2eac91a02…

MALICIOUS

PDF

37.5 KB Created: 2020-08-02 14:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed773eb4803fd81759c0dc2c165d40fa SHA-1: 4190e6f0f8fc4e24a259e78e99374524de62b2fb SHA-256: c396a5c2eac91a02ec935a47cc2cb87affe141c56b9d3d538f8a24f1b90deb11
154 Risk Score

Malware Insights

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

The PDF document is identified as malicious by a machine learning classifier and heuristic rules. It contains a large number of embedded links, including a redirector to known malicious infrastructure at 'https://ttraff.ru/pify?keyword=modern+physics+randy+harris+pdf+download'. The document body suggests a lure for downloading a PDF, which is consistent with a phishing or SEO spam campaign.

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.ru/pify?keyword=modern+physics+randy+harris+pdf+download
    • http://files.hamshaw888.com/uploads/1/3/1/3/131379894/823d7aa.pdf
    • http://files.communityfarmersmarketbg.com/uploads/1/3/1/4/131408864/rogapokesom-vazusunetul-jipijokif-pinetinaji.pdf
    • http://files.milimawear.com/uploads/1/3/0/8/130813846/bd0854.pdf
    • http://files.marcyoungquist.com/uploads/1/3/2/3/132302998/kesovibopoju_siwovoxofuzeluf_wixobalorus.pdf
    • http://files.micheldaigneault.com/uploads/1/3/1/4/131407796/bulojekamedekovot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/59739403542.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/81740672974.pdf
    • https://cdn.shopify.com/s/files/1/0434/0934/2614/files/xujofituwegekujidimuminos.pdf
    • https://cdn.shopify.com/s/files/1/0438/2785/5522/files/nimuwejedew.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/51906183871.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/20429444275.pdf
    • https://cdn.shopify.com/s/files/1/0432/2141/8147/files/66026443904.pdf
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/59000467812.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/25546888380.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/16196461856.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/dijkstra_algorithm_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/jevaforizabelaxuviva.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005367.bin
2eec463e67d9fbc8ffdb6e6df995d935f04cec652ce4a50eec4a80d237a69611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5367 5440 bytes
font_01_sfnt_off00006609.bin
980677d5c840c17cc400094cdb9b3150be3b0999c868b78a0f5426e16d4867b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6609 10136 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.