Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4a4324eadd6f38…

MALICIOUS

PDF

60.0 KB Created: 2020-08-14 11:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc00204466a1ab3bd73af4f066eba8de SHA-1: 5ea1c4fd676c9009df0c33e0300d3e71095d9309 SHA-256: 7e4a4324eadd6f38b45bb74e345858094c5a69849467a83415a51ab86403921f
154 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for "Adobe premiere rush cc apk free" which redirects to a malicious URL. This indicates a phishing or scam attempt, likely using the document as a lure to drive traffic to malicious infrastructure. The presence of numerous external PDF links further suggests a link farm or SEO manipulation tactic to increase visibility.

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=adobe+premiere+rush+cc+apk+free
    • http://nivax.holycrossparishet.org/uploads/1/3/1/6/131637814/timira_numokoxolixo_sozex_gakotowizijiro.pdf
    • http://files.adriennewalters.com/uploads/1/3/0/7/130739780/gozuboxetofafa.pdf
    • http://files.mohpg.org/uploads/1/3/2/6/132681992/e8f774.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/10942323540.pdf
    • https://cdn.shopify.com/s/files/1/0448/2197/1104/files/purple_skull_trooper.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/5844914203.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/ejercicio_anaerobico_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/zonotizexamosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25346701784.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8493/files/50945558875.pdf
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/zoxofasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1223/4139/files/14078381600.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/tusakutekujugije.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/80451533791.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b0b1.bin
1813584a611da974a33fa392a6e771d53871fb0ac1c5fd13b553a4d4db480f20		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB0B1 28848 bytes
font_00_sfnt_off0000792a.bin
33a207442fa87ed90dfe5257531f67d4b982969357d3db8b19b8a062b2ced5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x792A 5556 bytes
font_01_sfnt_off00008be5.bin
f45b424b071eac412036883fa4f19571968db8d449605f9d19abcdbf945bd4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE5 10764 bytes

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