Malicious PDF — malware analysis report

Static analysis result for SHA-256 062b81e5b2e60549…

MALICIOUS

PDF

46.8 KB Created: 2020-09-01 22:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d276589f7f3607854e4012e48c44090c SHA-1: abf34b173d7e54545107911a4577264c1135a3f0 SHA-256: 062b81e5b2e60549a72684c0f560ef7a2f0b4580801e34bbf2698ba4a7614c0a
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'worksheet' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of many Shopify links, some benign and some potentially part of a link farm, further supports the malicious redirector's purpose.

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/wix?keyword=compound+shapes+area+perimeter+worksheet
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8260/2904/files/simple_past_negative_form.pdf
    • https://cdn.shopify.com/s/files/1/0447/7802/9213/files/afr_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/2821/5968/files/holy_bible_king_james_version_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/vijutuwosenomuxufiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/baxter_furniture_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/86525193035.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0132/files/encyclopdie_catholique_tho.pdf
    • https://cdn.shopify.com/s/files/1/0457/0428/2268/files/telugu_love_story_audio_songs.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/lukizaxusemumun.pdf
    • https://cdn.shopify.com/s/files/1/0448/0620/9702/files/magisterium_4_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1159/files/date_ideas_melbourne_broadsheet.pdf
    • https://static.usrfiles.com/ugd/8cbfce_18185266abf343ad8d309d30057df128.pdf
    • https://static.usrfiles.com/ugd/52b593_fdf7e1d1859e4b51999319a119e06846.pdf
    • https://static.usrfiles.com/ugd/3b7182_5ad8016d15c14ce592e15618029ae8d7.pdf
    • https://static.usrfiles.com/ugd/0049ca_de11fd2e3f8b448bb6bfc1546c2beb88.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009176.bin
8d275b8ea07173a94f166a441c379cfbf20e4cd59fa3bee346c5d19778591575		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9176 17708 bytes
font_00_sfnt_off000057ee.bin
bbf3e8e76fc931d81c104204be1a759748a09cae42b8272b48d7caee4fb53231		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57EE 5228 bytes
font_01_sfnt_off00006994.bin
18593603c982309ceef7ec70e31f8e9a151e0befd4af136ee6c6119d3b16467e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6994 11828 bytes

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