Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d57ee1e1b90442…

MALICIOUS

PDF

62.5 KB Created: 2020-08-11 13:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5b3737dcc4f32d3194329f77d623dff SHA-1: fe4c463f2550a17b2677bac4b28bf572c8fa1872 SHA-256: e5d57ee1e1b904422a87d1cf90ab8a6b84c0b4372dc88cf6c27317dd40832ef8
152 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 'https://ttraff.ru/pify?keyword=analyze+poetry+pdf'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The PDF also contains a large number of external links, many hosted on cdn.shopify.com, indicating a potential link farm or distribution mechanism. The ML classifier strongly flagged this PDF as malicious.

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=analyze+poetry+pdf
    • http://files.andreasclothingstore.com/uploads/1/3/0/7/130775509/777f926.pdf
    • http://lebun.danaderuyck.com/uploads/1/3/1/4/131406390/863acc6f12414a0.pdf
    • http://files.diamondpaintingconnection.com/uploads/1/3/1/6/131637016/54469954250056.pdf
    • http://files.simplywood.com.au/uploads/1/3/1/6/131636642/5d958cacc979c2d.pdf
    • http://xupigep.excellenteagle.com/uploads/1/3/2/7/132740435/poserabi-fefuvirukixen-masowimavevezo-pebonesijilud.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/gulavimofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/4036023329.pdf
    • https://cdn.shopify.com/s/files/1/0433/3993/9994/files/animal_kingdom_map_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/siwak.pdf
    • https://cdn.shopify.com/s/files/1/0430/2081/2441/files/way_of_the_long_death_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6241/files/87619520986.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/15907383004.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/algebra_practice_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/53866549059.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/20422158.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000abf7.bin
1523f6db90c257d045f777e5fcfc9f81e8b1ed3fd2feafd5dcc081dfa3b596bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABF7 4736 bytes
font_01_sfnt_off0000bc22.bin
e2dfcc04ff5f803d3155e77f291e64042da037d31d02faf4d53643f244a4f935		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC22 10144 bytes
font_02_sfnt_off0000dedc.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDC 4324 bytes

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