Malicious PDF — malware analysis report

Static analysis result for SHA-256 dccc8a0b68eb1e73…

MALICIOUS

PDF

48.9 KB Created: 2020-08-31 05:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd825fd9a385265716eda9ea661e97f9 SHA-1: 700414c4efe38b965dd4b968ec82cbc29cdbfc48 SHA-256: dccc8a0b68eb1e73c3125a07fcfc83b3217a0222b8a19fdd58c163ec144c124c
152 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to click on what appears to be a book title. The primary link, 'https://ttraff.com/wix?keyword=focus+on+nursing+pharmacology+7th+ed', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on Shopify, suggesting a SEO-based lure to drive traffic to malicious infrastructure.

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.com/wix?keyword=focus+on+nursing+pharmacology+7th+ed
    • https://cdn.shopify.com/s/files/1/0435/7036/4571/files/raroja.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/94547406043.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6519/files/77494041839.pdf
    • https://cdn.shopify.com/s/files/1/0434/1792/7837/files/zuwajafoxovawozalow.pdf
    • https://static.usrfiles.com/ugd/1f5cef_0a145dd40661457ebfaaee4b90a652cd.pdf
    • https://static.usrfiles.com/ugd/bf650e_34d152df6f5346d69689f6246aa88ea5.pdf
    • https://static.usrfiles.com/ugd/822ecd_48770737adac450d85b582fe62b754e3.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/bejasawida.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/rozegogiwojoxejibejik.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/metabolisme_energi_sel.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/54622004481.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/bobby_valintino_tell_me.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/parovusotabapowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/kerefatos.pdf
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/craigs_list_holland.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/
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/5462200448

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070cb.bin
1b51e85d9094c4f504f7de5d9c6b8c348f65e4556e4287efb62f2a8cb97f72f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CB 5504 bytes
font_01_sfnt_off0000835b.bin
0a78b34720780979754960e795d1e58ef1aef99572628b88a36222e5a493abee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835B 10756 bytes
font_02_sfnt_off0000a82a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA82A 4324 bytes

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