Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05b1a4cb826b736…

MALICIOUS

PDF

47.5 KB Created: 2020-08-23 04:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9ff57061931edb7b586c96f97d7085d SHA-1: 34815ad23b067f799bb132ac81dd8770adacda35 SHA-256: b05b1a4cb826b736fb450ae3f3132f69148064dd985a0dd9992407023ab8f265
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it's a redirector link to a known malicious URL. Additionally, it functions as a link farm, hosting numerous external PDF links, with the primary redirector URL being 'https://ttraff.cc/pify?keyword=game+archero+mod+terbaru'. The document body, though heavily obfuscated, contains this same URL, suggesting the document's primary purpose is to lure users to this malicious site.

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=game+archero+mod+terbaru
    • http://files.goministries.us/uploads/1/3/1/4/131482975/1186216.pdf
    • http://files.saraelizabethtaylor.com/uploads/1/3/1/3/131384636/6747658.pdf
    • http://zafiniz.capturedmemoriesbyc.com/uploads/1/3/1/4/131453267/d6e5dbe.pdf
    • http://gajavum.brandywinemartialarts.com/uploads/1/3/1/6/131606156/e843efbdd2a4.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/jonuxuvubemetikigimewinaj.pdf
    • https://cdn.shopify.com/s/files/1/0464/9805/4312/files/angel_wings_png_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/human_biology_mader_13th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/your_song_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/3462/1590/files/90574557788.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/mogefara.pdf
    • https://cdn.shopify.com/s/files/1/0433/8663/4390/files/mockingjay_epilogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/7063/5676/files/attestation_simplifie_des_particuliers_employeurs_pole_emploi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2279/4395/files/mimikanivilomuparubikare.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/xedexitipixu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2312/files/jurabed.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/australian_breast_cancer_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/91496441480.pdf
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/emuparadise_workaround_script_2019.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/git_change_origin_branch.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_off00007cc9.bin
dfbb31dfd5f84603a7aba766df5ea270b1e73829de9773ba872b852431387a9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC9 5140 bytes
font_01_sfnt_off00008e18.bin
3414b68348409f33990ac5a90935341f1c5e8ef7452bc2d0a1bc6017a98cdecc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E18 10168 bytes

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