Malicious PDF — malware analysis report

Static analysis result for SHA-256 1022e55830507de8…

MALICIOUS

PDF

39.2 KB Created: 2020-08-12 20:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a24b6b56bdacc9841bdddd59f8af26f SHA-1: d6b4fd54d53ed0aa40639da5fbe725e643cfd118 SHA-256: 1022e55830507de85c7a17150348c4baea00697885f08ef7e7e3854eb38ca1d3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One URL, 'https://ttraff.com/pify?keyword=handbook+of+affinity+chromatography+pdf', is identified as a malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs aligns with techniques used to distribute malicious content or lead users to phishing sites.

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/pify?keyword=handbook+of+affinity+chromatography+pdf
    • http://files.saikatahamed.com/uploads/1/3/2/7/132740723/3741960.pdf
    • http://zinilu.bydivineappointmentthe5ps.com/uploads/1/3/0/7/130738524/figevebozaliti_musuj.pdf
    • http://files.ridgecreektack.com/uploads/1/3/0/7/130739456/5467233.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/achim_klenke_probability_theory_a_comprehensive_course.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/miwawegisos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7373/2769/files/totipixekiwofub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7469/8902/files/36501796087.pdf
    • https://cdn.shopify.com/s/files/1/0448/7793/8855/files/maritime_terms_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/67084180271.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/38418967199.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/72137975632.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/92663780767.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/gift_voucher_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38743570217.pdf
    • https://cdn.shopify.com/s/files/1/0434/0344/4380/files/automobile_ignition_system.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_off00005857.bin
c3e293bf3523cb7b5fce4347ae1a38892be603274320cf7b5f311cbc577c7916		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5857 5628 bytes
font_01_sfnt_off00006b46.bin
a43015dc9c188fa683c6554b153702732e84f286373750735cf41803b24d1cc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 10764 bytes

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