Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b170eb15279b91…

MALICIOUS

PDF

54.8 KB Created: 2020-08-18 15:14:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e81c23c2c5996fb211e4948909157dd7 SHA-1: 7e6e4d635a2e5c88a582c3b78e78799f46dd2454 SHA-256: 52b170eb15279b913db41410b61c53d25a5eecf8fa939d257bb593e8accfebce
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector. The document body text, though partially corrupted, includes a URL that appears to be a lure for academic material. The presence of a malicious redirector suggests the intent is to lead the user to a site that hosts further malicious content or phishing pages. No scripts were extracted from this sample.

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=zoology+bsc+1st+year+pdf
    • http://files.jacquelenebennett.com/uploads/1/3/0/7/130739654/a4df54.pdf
    • http://sixatej.davinciinitiative.org/uploads/1/3/1/0/131070792/jurefunopugege.pdf
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/vilizokusixofemopez.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/spiderman_games_for_ppsspp.pdf
    • https://cdn.shopify.com/s/files/1/0432/1542/1600/files/certificate_of_compliance_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/b2b._statefarm._com_supplement_request_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/carnatic_music_theory_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4103/6200/files/harry_potter_in_french.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/nuvobalexedokapumipok.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/bass_box_pro.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/vexeperizeguvisado.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/13088443209.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/44145474558.pdf
    • https://cdn.shopify.com/s/files/1/0432/1004/7645/files/hairy_maclary_s_bone.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000670b.bin
0d1f35958da7e8053d8dcfc8e3f668d1c4487d53237a1da81f975192715e885f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670B 5576 bytes
font_01_sfnt_off00007a12.bin
a0f5a8dfeaa0bb6dc0effbaf73f2996d6fa971a09dbb121d521afc971fdcd47e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A12 3204 bytes
font_02_sfnt_off00008705.bin
5e067315a2bd9524b6254977960f062bb129990ed69868068e29b4596197f3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8705 2320 bytes
font_03_sfnt_off00009158.bin
756635b8c0b309419d56739e2fb01d618086006345f4d26fd3a1acfa6a1d461e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9158 11984 bytes
font_04_sfnt_off0000b7ac.bin
a349519ccbdbca3d75704c2becf615ab37801eb1543272228454131dceb83acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7AC 16224 bytes

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