Malicious PDF — malware analysis report

Static analysis result for SHA-256 29fe700b31e960e8…

MALICIOUS

PDF

49.0 KB Created: 2020-09-16 00:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 175c302ef9ad001bf2d724553294081c SHA-1: 85435fc56a3a9bd729c1657383c9a0f0f834a0cd SHA-256: 29fe700b31e960e87c2a7c106edbf08a4668d01435f05ed028f305904026b1eb
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=angry+love+quotes+in+hindi'. The document body, though heavily obfuscated, contains a reference to this same URL, indicating an attempt to drive traffic to malicious sites. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest a campaign to manipulate search engine results or distribute malware.

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=angry+love+quotes+in+hindi In PDF document text
    • http://files.vikani.co/uploads/1/3/0/7/130739789/06a58b79e3e846.pdfIn PDF document text
    • http://mezekoxa.musicforyouth.net/uploads/1/3/1/4/131438741/6451035.pdfIn PDF document text
    • http://files.ascenterpsolutions.com/uploads/1/3/2/7/132710601/5537495.pdfIn PDF document text
    • http://files.gogirlempowerment.org/uploads/1/3/1/3/131384359/tizizozewaxol.pdfIn PDF document text
    • http://kimego.shirelandscaping.com.au/uploads/1/3/1/6/131636789/3769408.pdfIn PDF document text
    • http://gixarenug.okgfdhotcpha.org/uploads/1/3/0/7/130774978/1584510.pdfIn PDF document text
    • http://figupoz.romanianamericanheritage.us/uploads/1/3/1/4/131406665/moninidowexamuf.pdfIn PDF document text
    • http://files.waterpolosunshinecoast.com/uploads/1/3/2/7/132740327/02b02d803.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1926/2363/files/larkin_love_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8439/6184/files/basic_electronics_mcq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8029/0982/files/30408175035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/8357/2895/files/voltage_transformer_used_in_substation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/leaf_coloring_sheet_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9741/5077/files/wulidunuxorapax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2305/5523/files/scientific_names_of_plants_and_animals_in_telugu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D2 5152 bytes
SHA-256: a2b18c069f6c002456717d4a16f4d9200fcaf8cbadee8a9676ad65b4b5750410
font_01_sfnt_off0000895a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895A 14100 bytes
SHA-256: 70252e81356bd58c0e294d5978b6969c5d4a06508cadb1e82a3422ee315a2f1c

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