Malicious PDF — malware analysis report

Static analysis result for SHA-256 447e0823360974ff…

MALICIOUS

PDF

73.6 KB Created: 2020-10-26 09:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 89a886b91de89e0a9f0fe0430893d9b7 SHA-1: 87e36fa2396370e16950ecd7ea04bf8e2caa45c0 SHA-256: 447e0823360974ff2030e775b8db7402df9143f84fa557831604b230c071893f
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link that redirects to known malicious infrastructure, disguised with a lure for cracked software. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same redirect URL, suggesting an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/123?keyword=wscope+premium+apk+cracked In PDF document text
    • https://bupifepubeweta.weebly.com/uploads/1/3/4/3/134336259/7665569.pdfIn PDF document text
    • https://gutomaxitokivi.weebly.com/uploads/1/3/1/3/131383747/0a2927e2e41.pdfIn PDF document text
    • https://gemenudotipetal.weebly.com/uploads/1/3/2/6/132695720/5fd602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8fbde068b9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392462/normal_5f966bfb515a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f86fce112241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_5f88b3c3f3bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f89dd7e303e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f9314401f5cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f878ccf77f80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8772c4bf929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387716/normal_5f93bcf02cf1c.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/neviwove/banagize.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/breaking_bad_ozymandias_script.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/black_dog_solo_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/27170851771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2325ab6a-8962-4ac9-b43b-dc30a08cdbd2/8706500470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69edbdc4-1ea7-4d41-86e5-f7bdd8f53b9a/49232901992.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/norma_aashto_t_180.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/anti_malthusian_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/aerobika_device.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB089 1880 bytes
SHA-256: 73c49a51323db037a8430092ff62122c91e891e079dfc59982cde76e012b8fdf
font_01_sfnt_off0000b944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB944 3672 bytes
SHA-256: 3cf3199c2571d747c5e66973d5d0783b1ac29216824066ee247cd328e172f7e0
font_02_sfnt_off0000c637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC637 5264 bytes
SHA-256: c0357339fa48c2721c928ce8903712e155e982772c0e18f5056920268f6c7422
font_03_sfnt_off0000d80d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80D 11700 bytes
SHA-256: b35a78eb6987877b715cff7a0472bd5bd0c49660fc05cd8823407a37ff6b68f8
font_04_sfnt_off0001001a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1001A 16932 bytes
SHA-256: 86b5838f17800fa6e1d3f7dcc2080c16b366795f720fd4097802c347b2e4ba95