Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1ef7a3e11d20e7…

MALICIOUS

PDF

69.7 KB Created: 2020-08-22 09:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fdeaeec4c5e103346cf0ecaf59093e2 SHA-1: b85a4cb09443b6446bb47ddffdee478a204c3d9b SHA-256: 0e1ef7a3e11d20e744fd340b76d1842f3235f202d75a40fe0568a7f0df125540
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL, 'https://ttraff.cc/pify?keyword=android+room+db+example', is explicitly flagged as malicious. This suggests the document is designed to lead users to harmful websites, likely for phishing or malware distribution.

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=android+room+db+example
    • http://jupetowox.rebeccafalcasantos.com/uploads/1/3/0/8/130813834/5cdf5c425.pdf
    • http://jotaza.cakedecoratorsguildnsw.org/uploads/1/3/1/4/131408008/568770.pdf
    • http://files.reneezwang.com/uploads/1/3/1/4/131409090/galepo_dowenuwa_zuselagujusut_jadajal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/1950317900.pdf
    • https://cdn.shopify.com/s/files/1/0428/5012/3943/files/18555401505.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/58330585564.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/quadratische_funktion_aufgaben_mit_lsung.pdf
    • https://cdn.shopify.com/s/files/1/0438/8513/3992/files/xesuviruwemax.pdf
    • https://cdn.shopify.com/s/files/1/0434/9788/1766/files/wexexif.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7572/files/52088815970.pdf
    • https://cdn.shopify.com/s/files/1/0429/3741/7891/files/xulomopimafejeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/waribiwulokaviruxagipite.pdf
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/tepumezubefawadisomagot.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/selenetarunitizovir.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_off0000c5fc.bin
fd083ec78dbfd85eb3af4511f277b87f4b36f5689358ac3167c2788b97c2bcee
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FC 5124 bytes
font_01_sfnt_off0000d74b.bin
c64ba8c65f7fa6f6ae4889b019dc20743a4e7946d99ed9e2e046671ec66828a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 16256 bytes