Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a595cd9d79e4fe1…

MALICIOUS

PDF

39.7 KB Created: 2020-08-04 04:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1be3597a548aac1a3cb2f65dd543d054 SHA-1: ffaf18c3fac4c09df1bf5bff58f3aaac4aaa1f01 SHA-256: 0a595cd9d79e4fe153d1072c17416a269063c763419d106c6d134ac7ac42dac6
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector and a large number of links to other PDFs, suggesting a link farm for SEO manipulation or malware distribution. The document body explicitly mentions downloading cracked software, reinforcing the malicious intent. While no scripts were extracted, the presence of malicious links and the lure of cracked software strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=download+wondershare+pdfelement+full+crack
    • http://files.elevateciereview.com/uploads/1/3/2/6/132682640/pususoxi.pdf
    • http://files.dona-hutson.com/uploads/1/3/0/7/130776542/jikosa.pdf
    • http://files.roughsawnlumber.com/uploads/1/3/0/7/130739806/gepene_sojedomaxu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/najasewujulivij.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/49240658923.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/sajufibapiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/69920221074.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6018/files/how_to_save_audio_from_youtube.pdf
    • https://cdn.shopify.com/s/files/1/0433/4800/0927/files/63064279656.pdf
    • https://cdn.shopify.com/s/files/1/0434/7517/3528/files/13543506627.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1336/files/xikako.pdf
    • https://cdn.shopify.com/s/files/1/0433/3531/9711/files/56007756356.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/sotixajume.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_off00005baa.bin
d6cbbb1746be9e7d5b02c34d5f333ea97cd0be248adef8540950c71e83657c6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAA 5552 bytes
font_01_sfnt_off00006e75.bin
a64b04fb5aaa45c9507d53c6d042936d477fea7d328ecd491c643e7ab76279d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E75 10388 bytes