Malicious PDF — malware analysis report

Static analysis result for SHA-256 0711b73a3fa45ae2…

MALICIOUS

PDF

41.9 KB Created: 2020-09-14 11:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 493e73816671bf402024fe2935e13806 SHA-1: aad7f1e5c16eb2f390bc5cbc1acf576747384832 SHA-256: 0711b73a3fa45ae2c334669e1fd7e6a1809ab02adb33beacb3fa1b88cc063eab
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 suspicious domains and are flagged as part of a link farm or redirector. The document body, though partially obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary goal is to direct users to malicious sites, potentially for phishing or malware distribution.

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.club/wix?keyword=wii+operations+manual+disk+cannot+be+read
    • http://zugagip.cambridgenurseryschool.org/uploads/1/3/0/7/130776769/wusafew.pdf
    • http://files.franciscreekranch.com/uploads/1/3/0/7/130775432/loritazix_wabebesirababo.pdf
    • http://files.kyler-leroux-coaching-portfolio.com/uploads/1/3/1/4/131482828/bokivimero.pdf
    • http://files.morlinaevents.com/uploads/1/3/0/8/130873918/9780613.pdf
    • http://buxitukom.cocokaboo.com/uploads/1/3/1/6/131637240/didozu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d55797_6ba041419ea44ea38ca0da1b65feb74a.pdf
    • https://static.usrfiles.com/ugd/5f4192_f0689560609d4398b205b3bee6a35b69.pdf
    • https://static.usrfiles.com/ugd/aa14a9_c44a84aa157c46b988ec4b44a67eaca6.pdf
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/jspdf_autotable_add_footer.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/44163799703.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/jolidegerivejedazutonam.pdf
    • https://cdn.shopify.com/s/files/1/0438/4836/8288/files/70390076760.pdf
    • https://cdn.shopify.com/s/files/1/0434/6875/0998/files/28119997700.pdf
    • https://static.usrfiles.com/ugd/9ef1ea_b2a2322b828c493c9b8596aef577e395.pdf
    • https://static.usrfiles.com/ugd/debdc1_d902089abd1c47c98bb1756adc24b86c.pdf
    • https://static.usrfiles.com/ugd/35c6e2_ee49cec454bd4bbf98d991c10149d5b5.pdf
    • https://static.usrfiles.com/ugd/6fd45c_aa3a0300aa9543f7bb068e401b6f95e5.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_off0000653b.bin
eb98d543e2d29568b8b0a70f027fe5714fb9aaf0798e8229cc837e9347cc31ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 5436 bytes
font_01_sfnt_off000077a7.bin
251f2af4b350738fc2451d337bbbb89d271792702fc045add36001d5a13221b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A7 10148 bytes

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