Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db6d749abe3b064…

MALICIOUS

PDF

37.2 KB Created: 2020-07-27 20:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a92cba41b82601f30c9fefd1115f08c2 SHA-1: 154cace834ef8383a522b90466abec08da998a10 SHA-256: 1db6d749abe3b0645aa87b96d7a5924af9ac7e5233a9339267a46fb5cce99ffa
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a Google Play Store download, which redirects to a malicious URL. This is further supported by heuristics indicating a malicious redirector and a link farm, suggesting an attempt to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=google+play+games+apk++3.+0.+11 In PDF document text
    • http://files.hallacroix.com/uploads/1/3/2/6/132681647/sakidarunolori.pdfIn PDF document text
    • http://files.weberworks.us/uploads/1/3/1/3/131383943/4040280.pdfIn PDF document text
    • http://files.ogsenergy.us/uploads/1/3/0/7/130739922/1330809.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/83128608208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/65222570340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2563/files/mopajijakojexinuroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/jexenagebofokovupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2441/6931/files/33662711852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6961/2966/files/62527242282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/jevizamopafara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0766/1464/files/weverofod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/80012487829.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000555a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x555A 5184 bytes
SHA-256: 30ef3195c0bec54ef935fa0f8d35deb4e119508016de345bc14b509d503adf27
font_01_sfnt_off00006719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6719 9588 bytes
SHA-256: ff31a6717ac571e30c24af106b20b22f953483e81c6caf91be6105a11999f60f