Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbaa12e3979a6e2a…

MALICIOUS

PDF

48.2 KB Created: 2020-08-23 17:07:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f422972b2870238fbc0ea6edbeacf1de SHA-1: 675cc8c5d1e1d1788aab258b492fae9df7a17d32 SHA-256: cbaa12e3979a6e2a0a682bce9190635f08fd46157c576597c078c544283835b8
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one identified as a malicious redirector. The document body suggests a lure related to 'Ley aborto argentina 2018 pdf', likely to entice users to click the malicious link. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL points towards a phishing or malware distribution attempt.

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=ley+aborto+argentina+2018+pdf
    • http://vegine.saginawago.com/uploads/1/3/0/8/130813650/wetepirozige-bumizezigaz-luwadebud.pdf
    • http://zatisexat.lovelaughterandreallife.com/uploads/1/3/0/7/130776131/9920680.pdf
    • http://files.milkearlyparentingsupport.com/uploads/1/3/1/6/131637484/7261211.pdf
    • http://files.nacounseling.net/uploads/1/3/1/8/131858661/baloger-pejizugagar-dodurogowufig.pdf
    • http://wixobut.warzonecomicswzc.com/uploads/1/3/2/8/132815732/pigalixugozopukuvego.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/cooling_tower_basics.pdf
    • https://cdn.shopify.com/s/files/1/0455/6678/7749/files/animaker_software_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/tozanesabadevub.pdf
    • https://cdn.shopify.com/s/files/1/0440/9583/2216/files/8265634745.pdf
    • https://cdn.shopify.com/s/files/1/0435/9585/8088/files/21733439556.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/vewoxasusogepixenavotu.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/44727074702.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/55644952965.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/32463326070.pdf
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/facebook_debugger_tool.pdf
    • https://cdn.shopify.com/s/files/1/0438/4115/9333/files/jitukiwelupisobogedugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9136/files/morijomalenon.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/asriel_x_frisk.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_off00007a46.bin
3856e5783f15f1f73c2f77bb149b5ec004a6151206ebd0bcdabea448721e40eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A46 5704 bytes
font_01_sfnt_off00008dcb.bin
7a671e6bbe9c88aa325b24fea7d776760397d4ac051dd66b954968394a553f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCB 11296 bytes

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