Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba00c80143726df0…

MALICIOUS

PDF

35.0 KB Created: 2020-08-24 22:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d537088e35c0395663c237ca281940a1 SHA-1: 6f3dc76fbc3020bfb4a236cf3d6845206eba7523 SHA-256: ba00c80143726df06f2c024905f3afa74532258b84bd87d6a961a09801aa3b50
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The primary malicious link is https://ttraff.com/pify?keyword=pokemon+fire+red+prima+guide, which likely serves as a lure to a phishing or malware distribution site. The document body's content is largely obfuscated but contains references to 'Pokemon fire red prima guide', suggesting a lure related to gaming guides.

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=pokemon+fire+red+prima+guide
    • http://bavono.tgifteachersgetitfree.com/uploads/1/3/1/0/131070450/lopunusonapulesabu.pdf
    • http://farilonil.kemiesho.com/uploads/1/3/0/8/130874030/9166673.pdf
    • http://suvipi.skatecoachkristina.net/uploads/1/3/1/8/131871721/ed82d1.pdf
    • http://pasivofe.animclass.org/uploads/1/3/2/6/132683209/fajikowov.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/29646076884.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/new_christian_songs_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/10934374774.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/viraladunagewegupij.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6891/files/cfsi_conflict_minerals_reporting_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/zewepe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/amino_acid_structure_and_function.pdf
    • https://cdn.shopify.com/s/files/1/0435/2131/0875/files/kelekeju.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b0b.bin
2750219bf2896069bc5a2da81cf8d5ea2222642c17ff65602759374d653b5807
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0B 5216 bytes
font_01_sfnt_off00005cb4.bin
22e5d695bc513dee036824ee19bb7acea4f6c788d1cd97d8ebbc7719d5fba942
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 10240 bytes