Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ce3c977b9cc32f…

MALICIOUS

PDF

46.3 KB Created: 2020-08-11 05:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f77742d1496882d941a77b5f60ce828 SHA-1: e5b20b4cee13df9693ccf18d22712e6c091d462a SHA-256: 01ce3c977b9cc32f8e42eda2c3d45bcbdd8ecfc670c9c74c00f07fa97196551c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a link farm hosted on Shopify. One of these links redirects to `https://ttraff.cc/pify?keyword=java+jtable+tutorial+pdf`, which is identified as malicious redirector infrastructure. This suggests the document is designed to lead users to malicious sites, likely for phishing or to download further 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.cc/pify?keyword=java+jtable+tutorial+pdf
    • http://files.lincolnwoodelementarylibrary.com/uploads/1/3/1/3/131383330/volanebemazo_jadugejitopok_panelavetifafi_nufog.pdf
    • http://files.bethelchurch-smallgroups.com/uploads/1/3/1/0/131069934/ebebbda.pdf
    • http://files.wenbaragrey.com/uploads/1/3/2/6/132681296/pekadip-zilupa-sigiguzaw.pdf
    • http://files.sacredvoicestudios.com/uploads/1/3/1/0/131070051/1866753.pdf
    • http://files.congregationalchurchmtdora.org/uploads/1/3/0/9/130969160/lanadatav_wutekudo_pasupovod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/kizikuposob.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/math_activities_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/linoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/31508515966.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/rolisiliketa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8055/6452/files/banuxenefiperabipavan.pdf
    • https://cdn.shopify.com/s/files/1/0437/5586/4215/files/63670865938.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/ranesajefewotodamit.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/david_jones_anathemata.pdf
    • https://cdn.shopify.com/s/files/1/0440/8632/9509/files/fugejedufesabudulamib.pdf
    • https://cdn.shopify.com/s/files/1/0435/3166/5562/files/napigax.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000709a.bin
00abe55b6a4232c44d614636d3c9b5059c7aafd7f2745bb0c071e41dfe35f0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709A 5120 bytes
font_01_sfnt_off00008220.bin
e12a3d580cbce404dd551ca771a9cdea352810d8473c76d96352f6f56beeedeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8220 13400 bytes

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